automapper_validation/generated/fv2504/

utilmd_gas_conditions_fv2504.rs

// <auto-generated>
// Generated by automapper-generator generate-conditions
// AHB: xml-migs-and-ahbs/FV2504/UTILMD_AHB_Gas_1_0a_außerordentliche_20240726.xml
// Generated: 2026-03-12T10:28:10Z
// </auto-generated>

// LLM-produced bodies aren't idiomatic Rust — silence stylistic lints at
// file scope so `cargo clippy -D warnings` stays green. Correctness,
// suspicious, and perf categories stay on so real bugs still surface.
#![allow(clippy::style, clippy::complexity)]

#[allow(unused_imports)]
use crate::eval::format_validators::*;
use crate::eval::{ConditionEvaluator, ConditionResult, EvaluationContext};

/// Generated condition evaluator for UTILMD_Gas FV2504.
pub struct UtilmdGasConditionEvaluatorFV2504 {
    // External condition IDs that require runtime context.
    external_conditions: std::collections::HashSet<u32>,
}

impl Default for UtilmdGasConditionEvaluatorFV2504 {
    fn default() -> Self {
        let mut external_conditions = std::collections::HashSet::new();
        external_conditions.insert(1);
        external_conditions.insert(4);
        external_conditions.insert(5);
        external_conditions.insert(14);
        external_conditions.insert(17);
        external_conditions.insert(29);
        external_conditions.insert(39);
        external_conditions.insert(51);
        external_conditions.insert(65);
        external_conditions.insert(92);
        external_conditions.insert(98);
        external_conditions.insert(108);
        external_conditions.insert(127);
        external_conditions.insert(129);
        external_conditions.insert(133);
        external_conditions.insert(147);
        external_conditions.insert(165);
        external_conditions.insert(166);
        external_conditions.insert(219);
        external_conditions.insert(241);
        external_conditions.insert(268);
        external_conditions.insert(283);
        external_conditions.insert(315);
        external_conditions.insert(324);
        external_conditions.insert(336);
        external_conditions.insert(427);
        Self {
            external_conditions,
        }
    }
}

impl ConditionEvaluator for UtilmdGasConditionEvaluatorFV2504 {
    fn message_type(&self) -> &str {
        "UTILMD_Gas"
    }

    fn format_version(&self) -> &str {
        "FV2504"
    }

    fn evaluate(&self, condition: u32, ctx: &EvaluationContext) -> ConditionResult {
        match condition {
            1 => self.evaluate_1(ctx),
            4 => self.evaluate_4(ctx),
            5 => self.evaluate_5(ctx),
            7 => self.evaluate_7(ctx),
            9 => self.evaluate_9(ctx),
            10 => self.evaluate_10(ctx),
            11 => self.evaluate_11(ctx),
            12 => self.evaluate_12(ctx),
            13 => self.evaluate_13(ctx),
            14 => self.evaluate_14(ctx),
            15 => self.evaluate_15(ctx),
            16 => self.evaluate_16(ctx),
            17 => self.evaluate_17(ctx),
            18 => self.evaluate_18(ctx),
            19 => self.evaluate_19(ctx),
            24 => self.evaluate_24(ctx),
            25 => self.evaluate_25(ctx),
            26 => self.evaluate_26(ctx),
            28 => self.evaluate_28(ctx),
            29 => self.evaluate_29(ctx),
            32 => self.evaluate_32(ctx),
            33 => self.evaluate_33(ctx),
            35 => self.evaluate_35(ctx),
            36 => self.evaluate_36(ctx),
            37 => self.evaluate_37(ctx),
            39 => self.evaluate_39(ctx),
            46 => self.evaluate_46(ctx),
            47 => self.evaluate_47(ctx),
            48 => self.evaluate_48(ctx),
            51 => self.evaluate_51(ctx),
            58 => self.evaluate_58(ctx),
            64 => self.evaluate_64(ctx),
            65 => self.evaluate_65(ctx),
            66 => self.evaluate_66(ctx),
            68 => self.evaluate_68(ctx),
            69 => self.evaluate_69(ctx),
            70 => self.evaluate_70(ctx),
            77 => self.evaluate_77(ctx),
            78 => self.evaluate_78(ctx),
            81 => self.evaluate_81(ctx),
            84 => self.evaluate_84(ctx),
            92 => self.evaluate_92(ctx),
            98 => self.evaluate_98(ctx),
            106 => self.evaluate_106(ctx),
            108 => self.evaluate_108(ctx),
            123 => self.evaluate_123(ctx),
            127 => self.evaluate_127(ctx),
            128 => self.evaluate_128(ctx),
            129 => self.evaluate_129(ctx),
            130 => self.evaluate_130(ctx),
            133 => self.evaluate_133(ctx),
            137 => self.evaluate_137(ctx),
            138 => self.evaluate_138(ctx),
            147 => self.evaluate_147(ctx),
            165 => self.evaluate_165(ctx),
            166 => self.evaluate_166(ctx),
            200 => self.evaluate_200(ctx),
            202 => self.evaluate_202(ctx),
            203 => self.evaluate_203(ctx),
            205 => self.evaluate_205(ctx),
            209 => self.evaluate_209(ctx),
            212 => self.evaluate_212(ctx),
            213 => self.evaluate_213(ctx),
            216 => self.evaluate_216(ctx),
            219 => self.evaluate_219(ctx),
            230 => self.evaluate_230(ctx),
            241 => self.evaluate_241(ctx),
            249 => self.evaluate_249(ctx),
            252 => self.evaluate_252(ctx),
            257 => self.evaluate_257(ctx),
            268 => self.evaluate_268(ctx),
            274 => self.evaluate_274(ctx),
            276 => self.evaluate_276(ctx),
            277 => self.evaluate_277(ctx),
            283 => self.evaluate_283(ctx),
            315 => self.evaluate_315(ctx),
            324 => self.evaluate_324(ctx),
            336 => self.evaluate_336(ctx),
            345 => self.evaluate_345(ctx),
            361 => self.evaluate_361(ctx),
            362 => self.evaluate_362(ctx),
            367 => self.evaluate_367(ctx),
            368 => self.evaluate_368(ctx),
            427 => self.evaluate_427(ctx),
            442 => self.evaluate_442(ctx),
            490 => self.evaluate_490(ctx),
            491 => self.evaluate_491(ctx),
            494 => self.evaluate_494(ctx),
            500 => self.evaluate_500(ctx),
            501 => self.evaluate_501(ctx),
            502 => self.evaluate_502(ctx),
            504 => self.evaluate_504(ctx),
            507 => self.evaluate_507(ctx),
            508 => self.evaluate_508(ctx),
            510 => self.evaluate_510(ctx),
            513 => self.evaluate_513(ctx),
            527 => self.evaluate_527(ctx),
            528 => self.evaluate_528(ctx),
            530 => self.evaluate_530(ctx),
            556 => self.evaluate_556(ctx),
            558 => self.evaluate_558(ctx),
            559 => self.evaluate_559(ctx),
            560 => self.evaluate_560(ctx),
            566 => self.evaluate_566(ctx),
            567 => self.evaluate_567(ctx),
            570 => self.evaluate_570(ctx),
            571 => self.evaluate_571(ctx),
            572 => self.evaluate_572(ctx),
            581 => self.evaluate_581(ctx),
            583 => self.evaluate_583(ctx),
            584 => self.evaluate_584(ctx),
            590 => self.evaluate_590(ctx),
            601 => self.evaluate_601(ctx),
            621 => self.evaluate_621(ctx),
            622 => self.evaluate_622(ctx),
            636 => self.evaluate_636(ctx),
            637 => self.evaluate_637(ctx),
            638 => self.evaluate_638(ctx),
            643 => self.evaluate_643(ctx),
            644 => self.evaluate_644(ctx),
            651 => self.evaluate_651(ctx),
            654 => self.evaluate_654(ctx),
            655 => self.evaluate_655(ctx),
            902 => self.evaluate_902(ctx),
            907 => self.evaluate_907(ctx),
            912 => self.evaluate_912(ctx),
            930 => self.evaluate_930(ctx),
            931 => self.evaluate_931(ctx),
            934 => self.evaluate_934(ctx),
            935 => self.evaluate_935(ctx),
            937 => self.evaluate_937(ctx),
            938 => self.evaluate_938(ctx),
            950 => self.evaluate_950(ctx),
            951 => self.evaluate_951(ctx),
            952 => self.evaluate_952(ctx),
            953 => self.evaluate_953(ctx),
            2061 => self.evaluate_2061(ctx),
            2119 => self.evaluate_2119(ctx),
            2284 => self.evaluate_2284(ctx),
            2286 => self.evaluate_2286(ctx),
            2287 => self.evaluate_2287(ctx),
            2335 => self.evaluate_2335(ctx),
            2353 => self.evaluate_2353(ctx),
            _ => ConditionResult::Unknown,
        }
    }

    fn is_external(&self, condition: u32) -> bool {
        self.external_conditions.contains(&condition)
    }
    fn is_known(&self, condition: u32) -> bool {
        matches!(
            condition,
            1 | 4
                | 5
                | 7
                | 9
                | 10
                | 11
                | 12
                | 13
                | 14
                | 15
                | 16
                | 17
                | 18
                | 19
                | 24
                | 25
                | 26
                | 28
                | 29
                | 32
                | 33
                | 35
                | 36
                | 37
                | 39
                | 46
                | 47
                | 48
                | 51
                | 58
                | 64
                | 65
                | 66
                | 68
                | 69
                | 70
                | 77
                | 78
                | 81
                | 84
                | 92
                | 98
                | 106
                | 108
                | 123
                | 127
                | 128
                | 129
                | 130
                | 133
                | 137
                | 138
                | 147
                | 165
                | 166
                | 200
                | 202
                | 203
                | 205
                | 209
                | 212
                | 213
                | 216
                | 219
                | 230
                | 241
                | 249
                | 252
                | 257
                | 268
                | 274
                | 276
                | 277
                | 283
                | 315
                | 324
                | 336
                | 345
                | 361
                | 362
                | 367
                | 368
                | 427
                | 442
                | 490
                | 491
                | 494
                | 500
                | 501
                | 502
                | 504
                | 507
                | 508
                | 510
                | 513
                | 527
                | 528
                | 530
                | 556
                | 558
                | 559
                | 560
                | 566
                | 567
                | 570
                | 571
                | 572
                | 581
                | 583
                | 584
                | 590
                | 601
                | 621
                | 622
                | 636
                | 637
                | 638
                | 643
                | 644
                | 651
                | 654
                | 655
                | 902
                | 907
                | 912
                | 930
                | 931
                | 934
                | 935
                | 937
                | 938
                | 950
                | 951
                | 952
                | 953
                | 2061
                | 2119
                | 2284
                | 2286
                | 2287
                | 2335
                | 2353
        )
    }
}

impl UtilmdGasConditionEvaluatorFV2504 {
    /// [108] Wenn Kundenwertverfahren (z. B. TU München)
    /// EXTERNAL: Requires context from outside the message.
    // REVIEW: Kundenwertverfahren (e.g., TU München) is a specific billing methodology determined by contract terms, not derivable from the EDIFACT message content itself. (medium confidence)
    fn evaluate_108(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("kundenwertverfahren")
    }

    /// [127] Hat der Lieferant auf Grund seines Vertrags Kenntnis, dass der Kunde keine hohe KA hat so muss er dies dem NB mitteilen
    /// EXTERNAL: Requires context from outside the message.
    // REVIEW: Whether the supplier knows from their contract that the customer has no high KA (Kapazitätsanteil) is contract-based knowledge external to the EDIFACT message. Cannot be determined from segment data alone. (medium confidence)
    fn evaluate_127(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("supplier_knows_no_high_ka")
    }

    /// [129] Hat der Lieferant auf Grund seines Vertrags Kenntnis über die Höhe der Sonder-KA, so muss er diesen dem NB mitteilen
    /// EXTERNAL: Requires context from outside the message.
    // REVIEW: Whether the supplier has contract knowledge about the amount of a special KA (Sonder-Kapazitätsanteil) is contract-based knowledge. Cannot be derived from the EDIFACT message. (medium confidence)
    fn evaluate_129(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("supplier_knows_special_ka_amount")
    }

    /// [230] Sich ergebendes Datum/ bzw. Endedatum des Turnuszeitraums aus DTM+Z21 (Termin der Netznutzungsabrechnung) und DTM+Z09 (Nächste Netznutzungsabrechnung) muss &gt;= DTM+92 (Beginn zum) sein
    // REVIEW: Compares the later of DTM+Z21 and DTM+Z09 (end of Turnuszeitraum) against DTM+92 (start date). Date formats differ across the three DTM qualifiers (Z21=CCYYMM/format 106, Z09=format 602, DTM+92=CCYYMMDDHHMM/format 303), so comparison is normalized to the CCYYMM prefix (first 6 chars). The exact definition of 'sich ergebendes Datum' from Z21+Z09 introduces some ambiguity — using max(Z21,Z09) as the best approximation. (medium confidence)
    fn evaluate_230(&self, ctx: &EvaluationContext) -> ConditionResult {
        {
            // DTM+Z21 (Termin der Netznutzungsabrechnung): elements[0][1], format 106/104
            let z21_val = ctx
                .find_segments_with_qualifier("DTM", 0, "Z21")
                .into_iter()
                .find_map(|s| s.elements.first().and_then(|e| e.get(1)).cloned())
                .unwrap_or_default();
            // DTM+Z09 (Nächste Netznutzungsabrechnung): elements[0][1], format 602
            let z09_val = ctx
                .find_segments_with_qualifier("DTM", 0, "Z09")
                .into_iter()
                .find_map(|s| s.elements.first().and_then(|e| e.get(1)).cloned())
                .unwrap_or_default();
            // DTM+92 (Beginn zum): elements[0][1], format 303 (CCYYMMDDHHMM)
            let dtm92_val = match ctx
                .find_segments_with_qualifier("DTM", 0, "92")
                .into_iter()
                .find_map(|s| s.elements.first().and_then(|e| e.get(1)).cloned())
            {
                Some(v) if !v.is_empty() => v,
                _ => return ConditionResult::Unknown,
            };
            // Use the later of Z21 and Z09 as the end date of the Turnuszeitraum
            // Note: formats differ (Z21=106/104, Z09=602, DTM+92=303) — use first 6 chars (CCYYMM) for comparison
            let end_date = match (z21_val.is_empty(), z09_val.is_empty()) {
                (false, false) => {
                    if z21_val >= z09_val {
                        z21_val
                    } else {
                        z09_val
                    }
                }
                (false, true) => z21_val,
                (true, false) => z09_val,
                (true, true) => return ConditionResult::Unknown,
            };
            // Compare first 6 chars (CCYYMM) — both reference dates have at least CCYYMM
            let end_ym = &end_date[..end_date.len().min(6)];
            let begin_ym = &dtm92_val[..dtm92_val.len().min(6)];
            if end_ym.len() < 6 || begin_ym.len() < 6 {
                return ConditionResult::Unknown;
            }
            ConditionResult::from(end_ym >= begin_ym)
        }
    }

    /// [315] Es sind alle OBISKennzahlen gem. EDI@Energy Codeliste der OBIS-Kennzahlen und Medien für den deutschen Energiemarkt Kap. 4 anzugeben welche an der Marktlokation erforderlich sind, dabei muss der M...
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_315(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("all_required_obis_codes_present")
    }

    /// [324] Es sind alle OBIS-Kennzahlen gem. EDI@Energy Codeliste der OBIS Kennzahlen Kap. 4. anzugeben welche an der Zähleinrichtung genutzt werden. Der Mindestumfang der OBIS-Kennzahlen ergibt sich aus den...
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_324(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("obis_codes_complete_for_product")
    }

    /// [1] Wenn Aufteilung vorhanden
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_1(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("message_splitting")
    }

    /// [4] Wenn MP-ID in SG2 NAD+MR (Nachrichtenempfänger) in der Rolle LF
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_4(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("recipient_is_lf")
    }

    /// [5] Wenn MP-ID in SG2 NAD+MS (Nachrichtenabsender) in der Rolle LF
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_5(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("sender_is_lf")
    }

    /// [7] Wenn SG4 STS+7++ZG9/ZH1/ZH2 (Transaktionsgrund: Aufhebung einer zukünftigen Zuordnung wegen Auszug des Kunden / -wegen Stilllegung / -wegen aufgehobenem Vertragsverhältnis) vorhanden
    fn evaluate_7(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualified_value("STS", 0, "7", 2, 0, &["ZG9", "ZH1", "ZH2"])
    }

    /// [9] Wenn SG4 STS+7++ZE4 (Transaktionsgrund: Weggefallene Markt- bzw. Messlokation) nicht vorhanden
    fn evaluate_9(&self, ctx: &EvaluationContext) -> ConditionResult {
        match ctx.has_qualified_value("STS", 0, "7", 2, 0, &["ZE4"]) {
            ConditionResult::True => ConditionResult::False,
            ConditionResult::False | ConditionResult::Unknown => ConditionResult::True,
        }
    }

    /// [10] Wenn SG4 STS+Z17 (Transaktionsgrund für befristete Anmeldung) vorhanden
    fn evaluate_10(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualifier("STS", 0, "Z17")
    }

    /// [11] Wenn SG4 STS+7++ZG9/ZH1/ZH2 (Transaktionsgrund: Aufhebung einer zukünftigen Zuordnung wegen Auszug des Kunden / -wegen Stilllegung / -wegen aufgehobenem Vertragsverhältnis) nicht vorhanden
    fn evaluate_11(&self, ctx: &EvaluationContext) -> ConditionResult {
        match ctx.has_qualified_value("STS", 0, "7", 2, 0, &["ZG9", "ZH1", "ZH2"]) {
            ConditionResult::True => ConditionResult::False,
            ConditionResult::False | ConditionResult::Unknown => ConditionResult::True,
        }
    }

    /// [12] Wenn SG4 DTM+471 (Ende zum nächstmöglichem Termin) nicht vorhanden
    fn evaluate_12(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.lacks_qualifier("DTM", 0, "471")
    }

    /// [13] Wenn SG4 STS+E01++Z01 (Status der Antwort: Zustimmung mit Terminänderung) nicht vorhanden
    fn evaluate_13(&self, ctx: &EvaluationContext) -> ConditionResult {
        match ctx.has_qualified_value("STS", 0, "E01", 2, 0, &["Z01"]) {
            ConditionResult::True => ConditionResult::False,
            ConditionResult::False | ConditionResult::Unknown => ConditionResult::True,
        }
    }

    /// [14] Wenn Datum bekannt
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_14(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("date_known")
    }

    /// [15] Wenn SG4 STS+E01++Z34 (Status der Antwort: Ablehnung Mehrfachkündigung) vorhanden
    fn evaluate_15(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualified_value("STS", 0, "E01", 2, 0, &["Z34"])
    }

    /// [16] Wenn SG4 STS+E01++Z12 (Status der Antwort: Ablehnung Vertragsbindung) vorhanden
    fn evaluate_16(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualified_value("STS", 0, "E01", 2, 0, &["Z12"])
    }

    /// [17] Wenn bereits eine bestätigte Kündigung durch Kunde oder MP vorhanden
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_17(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("confirmed_cancellation_present")
    }

    /// [18] Wenn SG4 DTM+93 (Ende zum) nicht vorhanden
    fn evaluate_18(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.lacks_qualifier("DTM", 0, "93")
    }

    /// [19] Wenn SG8 SEQ+Z01 (Daten der Marktlokation) SG10 CCI+++ZC0 (Prognose auf Basis von Werten) vorhanden
    fn evaluate_19(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.filtered_parent_child_has_qualifier(
            &["SG4", "SG8"],
            "SEQ",
            0,
            "Z01",
            "SG10",
            "CCI",
            2,
            "ZC0",
        )
    }

    /// [24] Wenn SG6 DTM+Z21 (Termin der Netznutzungsabrechnung) vorhanden
    fn evaluate_24(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualifier("DTM", 0, "Z21")
    }

    /// [25] Wenn der Meldepunkt im SG5 LOC+172 (Meldepunkt) DE3225 das Format der Marktlokations-ID hat
    // REVIEW: Marktlokations-ID in German gas market is a numeric (all-digit) identifier. LOC+172 has elements[0][0]='172', elements[1][0]=DE3225. Checks if value consists entirely of ASCII digits. Returns Unknown if no LOC+172 exists. (medium confidence)
    fn evaluate_25(&self, ctx: &EvaluationContext) -> ConditionResult {
        let segs = ctx.find_segments_with_qualifier("LOC", 0, "172");
        if segs.is_empty() {
            return ConditionResult::Unknown;
        }
        for seg in &segs {
            if let Some(val) = seg.elements.get(1).and_then(|e| e.first()) {
                if !val.is_empty() && val.chars().all(|c| c.is_ascii_digit()) {
                    return ConditionResult::True;
                }
            }
        }
        ConditionResult::False
    }

    /// [26] Wenn der Meldepunkt im SG5 LOC+172 (Meldepunkt) DE3225 das Format der Zählpunktbezeichnung hat
    // REVIEW: Zählpunktbezeichnung format contains non-digit characters (typically alphanumeric string). Negates condition 25's all-digit check. Returns True if DE3225 of LOC+172 is non-empty and contains at least one non-digit character. (medium confidence)
    fn evaluate_26(&self, ctx: &EvaluationContext) -> ConditionResult {
        let segs = ctx.find_segments_with_qualifier("LOC", 0, "172");
        if segs.is_empty() {
            return ConditionResult::Unknown;
        }
        for seg in &segs {
            if let Some(val) = seg.elements.get(1).and_then(|e| e.first()) {
                if !val.is_empty() && !val.chars().all(|c| c.is_ascii_digit()) {
                    return ConditionResult::True;
                }
            }
        }
        ConditionResult::False
    }

    /// [28] Wenn SG4 DTM+93 (Ende zum) vorhanden
    fn evaluate_28(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualifier("DTM", 0, "93")
    }

    /// [29] Wenn eine Bilanzierung stattfindet
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_29(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("balancing_takes_place")
    }

    /// [32] Wenn BGM+E03 (Änderungsmeldungen) vorhanden
    fn evaluate_32(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualifier("BGM", 0, "E03")
    }

    /// [33] Wenn in Abmeldung ein Bilanzierungsende vorhanden
    // REVIEW: Wenn in Abmeldung ein Bilanzierungsende vorhanden: BGM+E02 identifies the message as Abmeldung (de-registration), DTM+159 is Bilanzierungsende. Both must coexist. (medium confidence)
    fn evaluate_33(&self, ctx: &EvaluationContext) -> ConditionResult {
        let has_abmeldung = !ctx.find_segments_with_qualifier("BGM", 0, "E02").is_empty();
        let has_bilanzierungsende = !ctx.find_segments_with_qualifier("DTM", 0, "159").is_empty();
        ConditionResult::from(has_abmeldung && has_bilanzierungsende)
    }

    /// [35] Wenn das DE2380 von SG4 DTM+Z01 (Kündigungsfrist des Vertrags) an vierter Stelle T (Termin) enthält
    fn evaluate_35(&self, ctx: &EvaluationContext) -> ConditionResult {
        let segs = ctx.find_segments_with_qualifier("DTM", 0, "Z01");
        match segs.first() {
            Some(dtm) => {
                match dtm
                    .elements
                    .first()
                    .and_then(|e| e.get(1))
                    .map(|s| s.as_str())
                {
                    Some(value) => match value.chars().nth(3) {
                        Some('T') => ConditionResult::True,
                        Some(_) => ConditionResult::False,
                        None => ConditionResult::False, // segment absent → condition not applicable
                    },
                    None => ConditionResult::False, // segment absent → condition not applicable
                }
            }
            None => ConditionResult::False, // segment absent → condition not applicable
        }
    }

    /// [36] Wenn SG4 STS+E01++ZC5 (Status der Antwort: Ablehnung andere Anmeldung in Bearbeitung) vorhanden
    fn evaluate_36(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualified_value("STS", 0, "E01", 2, 0, &["ZC5"])
    }

    /// [37] Wenn Anmeldung/ Änderung befristet
    fn evaluate_37(&self, ctx: &EvaluationContext) -> ConditionResult {
        // Same check as [10]: STS+Z17 indicates befristete Anmeldung in Gas
        ctx.has_qualifier("STS", 0, "Z17")
    }

    /// [39] Wenn LF beabsichtigt Zählerstand zu übermitteln
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_39(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external
            .evaluate("lf_intends_to_transmit_meter_reading")
    }

    /// [46] Wenn in SG8 SEQ+Z35 ein SG10 CCI+Z12 (Lastprofil) CAV (Lastprofil) DE3055 der Wert 293 enthalten ist
    // REVIEW: In SG8 with SEQ+Z35 (Lastprofildaten), check SG10 children for CCI+Z12 (Lastprofil, elements[0][0]='Z12') AND a Klimazone CCI with DE3055=293 at elements[2][2] (responsible agency code = BDEW/GS1-DE). Uses collect_group_values to find Z35 SG8 instances by index, then navigator for SG10 child traversal. (medium confidence)
    fn evaluate_46(&self, ctx: &EvaluationContext) -> ConditionResult {
        let seq_values = ctx.collect_group_values("SEQ", 0, 0, &["SG4", "SG8"]);
        let z35_instances: Vec<usize> = seq_values
            .iter()
            .filter(|(_, v)| v == "Z35")
            .map(|(i, _)| *i)
            .collect();
        if z35_instances.is_empty() {
            return ConditionResult::False;
        }
        let nav = match ctx.navigator() {
            Some(n) => n,
            None => return ConditionResult::Unknown,
        };
        for i in z35_instances {
            let sg10_count = nav.child_group_instance_count(&["SG4", "SG8"], i, "SG10");
            for j in 0..sg10_count {
                let ccis = nav.find_segments_in_child_group("CCI", &["SG4", "SG8"], i, "SG10", j);
                let has_z12 = ccis.iter().any(|s| {
                    s.elements
                        .first()
                        .and_then(|e| e.first())
                        .is_some_and(|v| v == "Z12")
                });
                if !has_z12 {
                    continue;
                }
                // Check Klimazone CCI (Z99/ZA0) for DE3055=293 at elements[2][2]
                let has_293 = ccis.iter().any(|s| {
                    s.elements
                        .get(2)
                        .and_then(|e| e.get(2))
                        .is_some_and(|v| v == "293")
                });
                if has_293 {
                    return ConditionResult::True;
                }
            }
        }
        ConditionResult::False
    }

    /// [47] Wenn in SG8 SEQ+Z35 ein SG10 CCI+Z12 (Lastprofil) CAV (Lastprofil) DE3055 der Wert 293 nicht enthalten ist
    // REVIEW: Logical negation of condition 46: CCI+Z12 Klimazone DE3055=293 NOT present in SG10 under SG8+Z35. Propagates Unknown to maintain three-valued semantics. (medium confidence)
    fn evaluate_47(&self, ctx: &EvaluationContext) -> ConditionResult {
        match self.evaluate_46(ctx) {
            ConditionResult::True => ConditionResult::False,
            ConditionResult::False => ConditionResult::True,
            ConditionResult::Unknown => ConditionResult::Unknown,
        }
    }

    /// [48] Wenn in dieser SG4 das STS+E01++E14 (Status der Antwort: Ablehnung Sonstiges) vorhanden
    fn evaluate_48(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualified_value("STS", 0, "E01", 2, 0, &["E14"])
    }

    /// [51] Bei rückwirkendem Lieferende/Lieferbeginn
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_51(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("retroactive_delivery_change")
    }

    /// [58] Wenn in diesem CCI das DE3055 mit dem Code 293 vorhanden
    // REVIEW: DE3055 (Verantwortliche Stelle für die Codepflege) appears at CCI elements[2][2] in CCI — Klimazone/Temperaturmessstelle. Checks any CCI in the message has that code. 'In diesem CCI' implies context-local check; falls back to message-wide. (medium confidence)
    fn evaluate_58(&self, ctx: &EvaluationContext) -> ConditionResult {
        let ccis = ctx.find_segments("CCI");
        ConditionResult::from(ccis.iter().any(|s| {
            s.elements
                .get(2)
                .and_then(|e| e.get(2))
                .is_some_and(|v| v == "293")
        }))
    }

    /// [64] Wenn SG4 DTM+158 (Bilanzierungsbeginn) vorhanden
    fn evaluate_64(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualifier("DTM", 0, "158")
    }

    /// [65] Wenn Marktgebietsüber-lappung besteht, sind alle Bilanzkreise des LF zu melden in denen freie Kapazitäten beim NB bestehen
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_65(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("market_area_overlap_exists")
    }

    /// [66] Wenn SG10 CCI+Z19 (Bilanzkreis) im Vorgang mehr als einmal vorhanden
    fn evaluate_66(&self, ctx: &EvaluationContext) -> ConditionResult {
        let count = ctx.find_segments_with_qualifier("CCI", 0, "Z19").len();
        ConditionResult::from(count > 1)
    }

    /// [68] Wenn SG10 CCI+Z19 (Bilanzkreis) im Vorgang mehr als zweimal vorhanden
    fn evaluate_68(&self, ctx: &EvaluationContext) -> ConditionResult {
        let count = ctx.find_segments_with_qualifier("CCI", 0, "Z19").len();
        ConditionResult::from(count > 2)
    }

    /// [69] Wenn SG10 CCI+Z19 (Bilanzkreis) im Vorgang mehr als dreimal vorhanden
    fn evaluate_69(&self, ctx: &EvaluationContext) -> ConditionResult {
        let count = ctx.find_segments_with_qualifier("CCI", 0, "Z19").len();
        ConditionResult::from(count > 3)
    }

    /// [70] Wenn SG10 CCI+Z19 (Bilanzkreis) im Vorgang fünfmal vorhanden
    fn evaluate_70(&self, ctx: &EvaluationContext) -> ConditionResult {
        let count = ctx.find_segments_with_qualifier("CCI", 0, "Z19").len();
        ConditionResult::from(count == 5)
    }

    /// [77] Wenn SG8 SEQ+Z03 (Zähleinrichtungsdaten) CAV+Z30 (Identifikation/Nummer des Gerätes) nicht vorhanden
    fn evaluate_77(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.any_group_has_qualifier_without("SEQ", 0, "Z03", "CAV", 0, "Z30", &["SG4", "SG8"])
    }

    /// [78] Wenn SG4 STS+7++E02 (Transaktionsgrund: Einzug in Neuanlage) nicht vorhanden
    fn evaluate_78(&self, ctx: &EvaluationContext) -> ConditionResult {
        let result = ctx.has_qualified_value("STS", 0, "7", 2, 0, &["E02"]);
        match result {
            ConditionResult::True => ConditionResult::False,
            ConditionResult::False => ConditionResult::True,
            ConditionResult::Unknown => ConditionResult::Unknown,
        }
    }

    /// [81] Wenn SG4 FTX+ABO+Z05 (Beschreibung der Abweichung zur übermittelten Liste: Änderung vorhanden) vorhanden
    fn evaluate_81(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualified_value("FTX", 0, "ABO", 2, 0, &["Z05"])
    }

    /// [84] Wenn SG4 STS+E01++Z35 (Status der Antwort: Ablehnung der Abmeldeanfrage) vorhanden
    fn evaluate_84(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualified_value("STS", 0, "E01", 2, 0, &["Z35"])
    }

    /// [92] Wenn Wert innerhalb SG bzw. Segment geändert wird
    /// EXTERNAL: Requires context from outside the message.
    // REVIEW: 'Wenn Wert innerhalb SG bzw. Segment geändert wird' — whether a value was changed compared to a prior state cannot be determined from the EDIFACT message alone; requires external business context comparing current vs previous transmission. (medium confidence)
    fn evaluate_92(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("value_changed_in_segment")
    }

    /// [98] Wenn MP-ID in SG2 NAD+MS (Nachrichtenabsender) in der Rolle NB
    /// EXTERNAL: Requires context from outside the message.
    // REVIEW: 'Wenn MP-ID in SG2 NAD+MS in der Rolle NB' — while we can confirm NAD+MS exists in the message, determining whether that market participant ID is registered in the role of Netzbetreiber (NB) requires an external role/master-data lookup. Cannot be derived from the EDIFACT message content alone. (medium confidence)
    fn evaluate_98(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("sender_is_nb")
    }

    /// [106] Wenn in dieser SG8 SEQ+Z01 SG10 CCI+++ZA6 (Prognosegrundlage der Marktlokation: Prognose auf Basis von Profilen) vorhanden
    fn evaluate_106(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.filtered_parent_child_has_qualifier(
            &["SG4", "SG8"],
            "SEQ",
            0,
            "Z01",
            "SG10",
            "CCI",
            2,
            "ZA6",
        )
    }

    /// [123] Wenn noch mindestens eine weitere SG8 SEQ+Z20 (OBIS-Daten der Zähleinrichtung / Mengenumwerter) mit dem SG8 RFF+MG / Z11 (Gerätenummer des Zählers / Mengenumwerters) auf die gleiche Identifikati...
    // REVIEW: Collects device IDs (via RFF+MG or RFF+Z11) from all SG8 instances that have SEQ+Z20. Returns True if any device ID appears in at least two such instances, indicating at least one further SG8 references the same device. Requires navigator for proper group-scoped traversal. (medium confidence)
    fn evaluate_123(&self, ctx: &EvaluationContext) -> ConditionResult {
        let nav = match ctx.navigator() {
            Some(n) => n,
            None => {
                let seqs = ctx.find_segments_with_qualifier("SEQ", 0, "Z20");
                if seqs.len() < 2 {
                    return ConditionResult::False;
                }
                return ConditionResult::Unknown;
            }
        };
        let sg8_count = nav.group_instance_count(&["SG4", "SG8"]);
        let mut device_ids: Vec<String> = Vec::new();
        for i in 0..sg8_count {
            let seqs = nav.find_segments_in_group("SEQ", &["SG4", "SG8"], i);
            let has_z20 = seqs.iter().any(|s| {
                s.elements
                    .first()
                    .and_then(|e| e.first())
                    .is_some_and(|v| v == "Z20")
            });
            if !has_z20 {
                continue;
            }
            let rffs = nav.find_segments_in_group("RFF", &["SG4", "SG8"], i);
            for rff in &rffs {
                let qual = rff
                    .elements
                    .first()
                    .and_then(|e| e.first())
                    .map(|s| s.as_str());
                if matches!(qual, Some("MG") | Some("Z11")) {
                    if let Some(id) = rff.elements.first().and_then(|e| e.get(1)) {
                        if !id.is_empty() {
                            device_ids.push(id.clone());
                        }
                    }
                }
            }
        }
        for i in 0..device_ids.len() {
            for j in (i + 1)..device_ids.len() {
                if device_ids[i] == device_ids[j] {
                    return ConditionResult::True;
                }
            }
        }
        ConditionResult::False
    }

    /// [128] Wenn SG10 CAV+TAS/ TKS/ SAS/ KAS vorhanden
    fn evaluate_128(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.any_group_has_any_qualifier(
            "CAV",
            0,
            &["TAS", "TKS", "SAS", "KAS"],
            &["SG4", "SG8", "SG10"],
        )
    }

    /// [130] Wenn an Messlokation vorhanden
    // REVIEW: 'Wenn an Messlokation vorhanden' is interpreted as: a Messlokation section exists in the message, indicated by SEQ+Z18 (Daten der Messlokation) in SG8. Returns True when such a section is present. (medium confidence)
    fn evaluate_130(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualifier("SEQ", 0, "Z18")
    }

    /// [133] Wenn an der übermittelten Marktlokation / Messlokation vorhanden
    /// EXTERNAL: Requires context from outside the message.
    // REVIEW: 'Wenn an der übermittelten Marktlokation / Messlokation vorhanden' — whether a specific data element exists at the transmitted market or metering location is a business/registry lookup that cannot be determined from the EDIFACT message content alone. Marked external. (medium confidence)
    fn evaluate_133(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("at_marktlokation_or_messlokation")
    }

    /// [137] Nicht bei Neuanlage
    // REVIEW: 'Nicht bei Neuanlage' — the condition is True when the transaction reason is NOT E02 (Neubau / new installation). Finds STS with elements[0][0]="7" (Transaktionsgrund), checks elements[2][0] for E02, and negates the result. (medium confidence)
    fn evaluate_137(&self, ctx: &EvaluationContext) -> ConditionResult {
        match ctx.has_qualified_value("STS", 0, "7", 2, 0, &["E02"]) {
            ConditionResult::True => ConditionResult::False,
            ConditionResult::False => ConditionResult::True,
            ConditionResult::Unknown => ConditionResult::Unknown,
        }
    }

    /// [138] Wenn SG5 LOC+172 (Meldepunkt) nicht vorhanden
    fn evaluate_138(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.lacks_qualifier("LOC", 0, "172")
    }

    /// [147] Wenn in Anfrage vorhanden
    /// EXTERNAL: Requires context from outside the message.
    // REVIEW: 'Wenn in Anfrage vorhanden' — whether something is present in the original inquiry/request message is a cross-message business context that cannot be determined from the current EDIFACT message alone. Marked external. (medium confidence)
    fn evaluate_147(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("present_in_request")
    }

    /// [165] Wenn bekannt
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_165(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("date_known")
    }

    /// [166] Wenn vorhanden
    /// EXTERNAL: Requires context from outside the message.
    // REVIEW: 'Wenn vorhanden' — generic 'if present/available' without a specific segment reference. When used as a standalone condition this refers to business data availability that cannot be determined from the EDIFACT message structure alone. Marked external. (medium confidence)
    fn evaluate_166(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("data_available")
    }

    /// [200] Wenn BGM+Z26 (Vorläufige Meldung zur Marktraumumstellung) vorhanden
    fn evaluate_200(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualifier("BGM", 0, "Z26")
    }

    /// [202] Wenn SG4 STS+E01+ZG2 (Status der Antwort: Gültiges Ergebnis nach der Datenprüfung) vorhanden
    fn evaluate_202(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualified_value("STS", 0, "E01", 1, 0, &["ZG2"])
    }

    /// [203] Wenn STS+7++E06 / Z39 / ZC6 / ZC7 / ZC6 / ZT6 / ZT7
    fn evaluate_203(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualified_value(
            "STS",
            0,
            "7",
            2,
            0,
            &["E06", "Z39", "ZC6", "ZC7", "ZT6", "ZT7"],
        )
    }

    /// [205] Wenn SG9 QTY+Y02 (TUM Kundenwert) nicht vorhanden
    fn evaluate_205(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.lacks_qualifier("QTY", 0, "Y02")
    }

    /// [209] Wenn im selben Segment im DE2379 der Code 303 vorhanden ist
    fn evaluate_209(&self, ctx: &EvaluationContext) -> ConditionResult {
        ConditionResult::from(ctx.self_segment_value_equals("DTM", 0, 2, "303"))
    }

    /// [212] Wenn im selben SG12 NAD DE3124 nicht vorhanden
    // REVIEW: Checks if any NAD in SG12 has DE3124 (C058 first component, elements[2][0]) absent or empty. Without group-scoped navigation, falls back to message-wide NAD check. (medium confidence)
    fn evaluate_212(&self, ctx: &EvaluationContext) -> ConditionResult {
        let nads = ctx.find_segments("NAD");
        ConditionResult::from(nads.iter().any(|s| {
            s.elements
                .get(2)
                .map(|e| e.first().map(|v| v.is_empty()).unwrap_or(true))
                .unwrap_or(true)
        }))
    }

    /// [213] Wenn SG12 NAD+Z09 (Kunde des Lieferanten) vorhanden
    fn evaluate_213(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualifier("NAD", 0, "Z09")
    }

    /// [216] Wenn CCI+++Z88 (Netznutzung) CAV+Z74:::Z08 (Netznutzungsvertrag: Direkter Vertrag zwischen Kunden und NB) vorhanden
    // REVIEW: CCI+++Z88 means elements[2][0]=='Z88' (Netznutzung). CAV+Z74:::Z08 means elements[0][0]=='Z74' and elements[0][3]=='Z08' (Direkter Vertrag). Uses parent-child group navigation to check co-occurrence within the same SG10 instance. (medium confidence)
    fn evaluate_216(&self, ctx: &EvaluationContext) -> ConditionResult {
        let nav = match ctx.navigator() {
            Some(n) => n,
            None => {
                let cavs = ctx.find_segments("CAV");
                return ConditionResult::from(cavs.iter().any(|s| {
                    let e0 = s.elements.first();
                    e0.and_then(|e| e.first()).is_some_and(|v| v == "Z74")
                        && e0.and_then(|e| e.get(3)).is_some_and(|v| v == "Z08")
                }));
            }
        };
        let sg8_count = nav.group_instance_count(&["SG4", "SG8"]);
        for i in 0..sg8_count {
            let sg10_count = nav.child_group_instance_count(&["SG4", "SG8"], i, "SG10");
            for j in 0..sg10_count {
                let ccis = nav.find_segments_in_child_group("CCI", &["SG4", "SG8"], i, "SG10", j);
                let has_cci_z88 = ccis.iter().any(|s| {
                    s.elements
                        .get(2)
                        .and_then(|e| e.first())
                        .is_some_and(|v| v == "Z88")
                });
                if has_cci_z88 {
                    let cavs =
                        nav.find_segments_in_child_group("CAV", &["SG4", "SG8"], i, "SG10", j);
                    if cavs.iter().any(|s| {
                        let e0 = s.elements.first();
                        e0.and_then(|e| e.first()).is_some_and(|v| v == "Z74")
                            && e0.and_then(|e| e.get(3)).is_some_and(|v| v == "Z08")
                    }) {
                        return ConditionResult::True;
                    }
                }
            }
        }
        ConditionResult::False
    }

    /// [219] Wenn an Marktlokation vorhanden
    /// EXTERNAL: Requires context from outside the message.
    // REVIEW: 'Wenn an Marktlokation vorhanden' — whether specific data exists at the market location is a registry/master-data lookup that cannot be derived from the EDIFACT message content. Marked external. (medium confidence)
    fn evaluate_219(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("at_marktlokation")
    }

    /// [241] Wenn MP-ID in SG2 NAD+MR (Nachrichtenempfänger) in der Rolle MSB
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_241(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("recipient_is_msb")
    }

    /// [249] Innerhalb eines SG4 IDE müssen alle DE1131 der SG4 STS+E01 den identischen Wert enthalten
    // REVIEW: Checks that all STS+E01 segments have identical DE1131 values (elements[2][1] — Codeliste, Code within C556). Returns True when all values match the first occurrence. Message-wide fallback without per-SG4 grouping. (medium confidence)
    fn evaluate_249(&self, ctx: &EvaluationContext) -> ConditionResult {
        let sts_segs = ctx.find_segments("STS");
        let sts_e01: Vec<_> = sts_segs
            .iter()
            .filter(|s| {
                s.elements
                    .first()
                    .and_then(|e| e.first())
                    .is_some_and(|v| v == "E01")
            })
            .collect();
        if sts_e01.is_empty() {
            return ConditionResult::Unknown;
        }
        let first_val = sts_e01
            .first()
            .and_then(|s| s.elements.get(2))
            .and_then(|e| e.get(1))
            .map(|v| v.as_str())
            .unwrap_or("");
        ConditionResult::from(sts_e01.iter().all(|s| {
            s.elements
                .get(2)
                .and_then(|e| e.get(1))
                .map(|v| v.as_str())
                .unwrap_or("")
                == first_val
        }))
    }

    /// [252] Wenn DE0068 vorhanden
    // REVIEW: DE0068 is the Common Access Reference in UNH (elements[2][0]). Checks if it is present and non-empty in any UNH segment. (medium confidence)
    fn evaluate_252(&self, ctx: &EvaluationContext) -> ConditionResult {
        let unh_segs = ctx.find_segments("UNH");
        ConditionResult::from(unh_segs.iter().any(|s| {
            s.elements
                .get(2)
                .and_then(|e| e.first())
                .is_some_and(|v| !v.is_empty())
        }))
    }

    /// [257] Wenn in derselben SG8 SEQ+Z02 (OBIS-Daten der Marktlokation) das PIA+5+7-0?:33.86.0 vorhanden
    fn evaluate_257(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.any_group_has_co_occurrence(
            "SEQ",
            0,
            &["Z02"],
            "PIA",
            1,
            0,
            &["7-0:33.86.0"],
            &["SG4", "SG8"],
        )
    }

    /// [268] Wenn der Code im DE3207 in der "EDI@Energy Codeliste der europäischen Ländercodes" in der Spalte "PLZ vorhanden" ein "X" aufgeführt ist
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_268(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("country_has_postal_code_requirement")
    }

    /// [274] Wenn in derselben SG8 SEQ+Z20 (OBIS-Daten der Zähleinrichtung / Mengenumwerter) das PIA+5+7-b?:3.0.0 / 7-b?:6.0.0 / 7-b?:3.1.0 / 7-b?:6.1.0 / 7-b?:3.2.0 / 7-b?:6.2.0 / 7-b?:13.2.0 / 7-b?:16.2.0 / ...
    // REVIEW: Checks co-occurrence of SEQ+Z20 and PIA+5 in same SG8, then verifies the OBIS code (elements[1][0]) matches pattern '7-b:X.X.X' where b is variable (any subgroup) and suffix is one of the 16 listed measurement quantities. EDIFACT ?. decoded as literal colon. OBIS suffix match is message-wide as a secondary filter. (medium confidence)
    fn evaluate_274(&self, ctx: &EvaluationContext) -> ConditionResult {
        let obis_suffixes = [
            ":3.0.0", ":6.0.0", ":3.1.0", ":6.1.0", ":3.2.0", ":6.2.0", ":13.2.0", ":16.2.0",
            ":1.0.0", ":2.0.0", ":4.0.0", ":5.0.0", ":11.2.0", ":12.2.0", ":14.2.0", ":15.2.0",
        ];
        let has_seq_pia_co = ctx.any_group_has_co_occurrence(
            "SEQ",
            0,
            &["Z20"],
            "PIA",
            0,
            0,
            &["5"],
            &["SG4", "SG8"],
        );
        if !matches!(has_seq_pia_co, ConditionResult::True) {
            return has_seq_pia_co;
        }
        let pias = ctx.find_segments_with_qualifier("PIA", 0, "5");
        ConditionResult::from(pias.iter().any(|s| {
            s.elements.get(1).and_then(|e| e.first()).is_some_and(|v| {
                v.starts_with("7-") && obis_suffixes.iter().any(|suf| v.ends_with(suf))
            })
        }))
    }

    /// [276] Wenn SG4 DTM+92 (Beginn zum) vorhanden
    fn evaluate_276(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualifier("DTM", 0, "92")
    }

    /// [277] Wenn Zuordnung vorhanden
    // REVIEW: 'Wenn Zuordnung vorhanden' most likely refers to Bilanzkreiszuordnung zur Marktlokation, indicated by STS+Z18 per the MIG segment reference. Medium confidence as 'Zuordnung' could refer to other assignments in different PID contexts. (medium confidence)
    fn evaluate_277(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualifier("STS", 0, "Z18")
    }

    /// [283] Wenn Empfänger der Nachricht der zum Nachrichtendatum aktuell zugeordnete Lieferant ist
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_283(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("recipient_is_current_supplier")
    }

    /// [336] Wenn in Änderungsmeldung gefüllt
    /// EXTERNAL: Requires context from outside the message.
    // REVIEW: "Wenn in Änderungsmeldung gefüllt" means the condition applies when this field is populated in the context of an amendment message (Änderungsmeldung). Whether a given transmission constitutes an amendment depends on business context (the PID / Vorgang type) that cannot be reliably determined from the raw EDIFACT segments alone. Delegated to external provider. (medium confidence)
    fn evaluate_336(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("field_filled_in_amendment_message")
    }

    /// [345] Wenn 33-stelliger Meldepunkt im SG5 LOC+172 (Meldepunkt) vorhanden
    fn evaluate_345(&self, ctx: &EvaluationContext) -> ConditionResult {
        let locs = ctx.find_segments_with_qualifier("LOC", 0, "172");
        ConditionResult::from(locs.iter().any(|s| {
            s.elements
                .get(1)
                .and_then(|e| e.first())
                .map(|id| id.len() == 33)
                .unwrap_or(false)
        }))
    }

    /// [361] Wenn STS+E01++A03/ A04 nicht vorhanden
    fn evaluate_361(&self, ctx: &EvaluationContext) -> ConditionResult {
        let found = ctx
            .find_segments_with_qualifier("STS", 0, "E01")
            .iter()
            .any(|s| {
                s.elements
                    .get(2)
                    .and_then(|e| e.first())
                    .map(|v| v == "A03" || v == "A04")
                    .unwrap_or(false)
            });
        ConditionResult::from(!found)
    }

    /// [362] Wenn STS+E01++A03/ A17 nicht vorhanden
    fn evaluate_362(&self, ctx: &EvaluationContext) -> ConditionResult {
        let found = ctx
            .find_segments_with_qualifier("STS", 0, "E01")
            .iter()
            .any(|s| {
                s.elements
                    .get(2)
                    .and_then(|e| e.first())
                    .map(|v| v == "A03" || v == "A17")
                    .unwrap_or(false)
            });
        ConditionResult::from(!found)
    }

    /// [367] Wenn SG4 STS+E01++A04 vorhanden
    fn evaluate_367(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.has_qualified_value("STS", 0, "E01", 2, 0, &["A04"])
    }

    /// [368] Es sind alle Codes aus der Codeliste G_0009 erlaubt
    fn evaluate_368(&self, _ctx: &EvaluationContext) -> ConditionResult {
        ConditionResult::True
    }

    /// [427] Messprodukt-Code aus Kapitel 3 "Codeliste der Standard-Messprodukte Gas" der Codeliste der Konfigurationen
    /// EXTERNAL: Requires context from outside the message.
    fn evaluate_427(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.external.evaluate("messprodukt_code_gas_valid")
    }

    /// [442] Wenn in keinem SG8+SEQ+Z09 Mengenumwerterdaten das RFF+MG (Referenz auf die Gerätenummer) der in diesem RFF DE1154 genannte Gerätenummer des Zählers vorhanden ist
    // REVIEW: Condition is True when NO SG8 with SEQ+Z09 (Mengenumwerterdaten) has a co-occurring RFF+MG. Implemented by negating any_group_has_co_occurrence. Medium confidence because the 'same device number as meter' cross-reference aspect cannot be fully validated without knowing which meter device number to compare against. (medium confidence)
    fn evaluate_442(&self, ctx: &EvaluationContext) -> ConditionResult {
        let result = ctx.any_group_has_co_occurrence(
            "SEQ",
            0,
            &["Z09"],
            "RFF",
            0,
            0,
            &["MG"],
            &["SG4", "SG8"],
        );
        match result {
            ConditionResult::True => ConditionResult::False,
            ConditionResult::False => ConditionResult::True,
            ConditionResult::Unknown => ConditionResult::Unknown,
        }
    }

    /// [490] Wenn Wert in diesem DE, an der Stelle CCYYMMDD ein Datum aus dem angegeben Zeitraum der Tabelle Kapitel 3.5 „Prozesszeitpunkt bei MESZ mit UTC“ ist
    fn evaluate_490(&self, ctx: &EvaluationContext) -> ConditionResult {
        match ctx.resolved_value {
            Some(val) => is_mesz_utc(val),
            None => ConditionResult::False,
        }
    }

    /// [491] Wenn Wert in diesem DE, an der Stelle CCYYMMDD ein Datum aus dem angegeben Zeitraum der Tabelle Kapitel 3.6 „Prozesszeitpunkt bei MEZ mit UTC““ ist
    fn evaluate_491(&self, ctx: &EvaluationContext) -> ConditionResult {
        match ctx.resolved_value {
            Some(val) => is_mez_utc(val),
            None => ConditionResult::False,
        }
    }

    /// [494] Das hier genannte Datum muss der Zeitpunkt sein, zu dem das Dokument erstellt wurde, oder ein Zeitpunkt, der davor liegt
    fn evaluate_494(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Das genannte Datum muss dem Dokumenterstellungszeitpunkt oder einem früheren Zeitpunkt entsprechen — informational annotation
        ConditionResult::True
    }

    /// [500] Hinweis: Code ist gemäß der Kategorie der zu stornierenden Meldung zu wählen
    fn evaluate_500(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Code ist gemäß der Kategorie der zu stornierenden Meldung zu wählen — informational note, always applies
        ConditionResult::True
    }

    /// [501] Hinweis: Die Angabe wird aus dem DTM+157 (Änderung zum) der Zuordnungsliste übernommen
    fn evaluate_501(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Die Angabe wird aus dem DTM+157 (Änderung zum) der Zuordnungsliste übernommen — informational note, always applies
        ConditionResult::True
    }

    /// [502] Hinweis:  Ersatzbelieferung gibt es nur bei  - Marktlokationen in der  Niederdruckebene, die kein Haushaltskunde gem. EnWG sind und die nicht mehr der gesetzlichen Ersatzversorgung (drei Monate) un...
    fn evaluate_502(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Informational note about Ersatzbelieferung scope and bilateral agreements.
        // No evaluatable boolean logic — purely documentary.
        ConditionResult::Unknown
    }

    /// [504] Hinweis: Der Code Z22 wird auch in der Sparte Strom genutzt. Der Verweis auf den Einspeisevergütungsintervall ist in der Sparte Gas nicht relevant.
    fn evaluate_504(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Informational note that Z22 is also used in electricity sector;
        // Einspeisevergütungsintervall reference is not relevant in gas sector.
        // No evaluatable boolean logic — purely documentary.
        ConditionResult::Unknown
    }

    /// [507] Hinweis: Ursprünglich vom NB bestätigtes Beginndatum
    fn evaluate_507(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Informational note — 'ursprünglich vom NB bestätigtes Beginndatum'.
        // Documents the semantic meaning of the date field; no boolean logic.
        ConditionResult::Unknown
    }

    /// [508] Hinweis: Beginndatum beim neuen NB
    fn evaluate_508(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Informational note — 'Beginndatum beim neuen NB'.
        // Documents the semantic meaning of the date field; no boolean logic.
        ConditionResult::Unknown
    }

    /// [510] Hinweis: Zu verwenden bei der Abmeldung der ESV
    fn evaluate_510(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Informational note — to be used for deregistration of ESV (Ersatzversorgung).
        // Documents usage context; no boolean logic.
        ConditionResult::Unknown
    }

    /// [513] Hinweis: Ist SG9 QTY+Y02 (TUM Kundenwert) vorhanden, dann ist ausschließlich SG9 QTY+Y02, unabhängig von SG9 QTY+31 (Veranschlagte Jahresmenge gesamt), für die Bilanzierung und MMM-Abrechnung zu...
    // REVIEW: Hinweis describing precedence rule between QTY+Y02 and QTY+31. Partial implementation checks whether QTY+Y02 is present (i.e. the rule is active). Full semantic enforcement (exclusive use) cannot be expressed as a simple ConditionResult. (medium confidence)
    fn evaluate_513(&self, ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: If QTY+Y02 (TUM Kundenwert) is present, only QTY+Y02 (not QTY+31) is
        // to be used for billing and MMM settlement. This is a documentation note about
        // precedence, not a simple presence/absence condition.
        // Best approximation: True if QTY+Y02 is present (signalling the rule applies).
        ctx.has_qualifier("QTY", 0, "Y02")
    }

    /// [527] Hinweis: Es ist die ID der Marktlokation und alle Identifikatoren der Messlokationen anzugeben
    fn evaluate_527(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Informational note — ID of Marktlokation AND all Messlokation
        // identifiers must be provided. No evaluatable boolean logic.
        ConditionResult::Unknown
    }

    /// [528] Hinweis: Es ist das Datum/ Daten aus der Anfrage zu verwenden
    fn evaluate_528(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Informational note — the date(s) from the original request must be used.
        // No evaluatable boolean logic.
        ConditionResult::Unknown
    }

    /// [530] Hinweis: Es sind alle an dem Meldepunkt vorhandenen Daten, die mit dieser Segmentgruppe übermittelt werden und zum Datum „Änderung zum“ Gültigkeit haben, anzugeben. Dies kann zur Folge haben...
    fn evaluate_530(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Informational note — all data valid at 'Änderung zum' date for the
        // reporting point must be provided, possibly requiring repeated segment groups.
        // No evaluatable boolean logic.
        ConditionResult::Unknown
    }

    /// [556] Hinweis: Wenn keine Korrespondenzanschrift des Endverbrauchers/ Kunden vorliegt, ist die Anschrift der Marktlokation zu übermitteln
    fn evaluate_556(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Wenn keine Korrespondenzanschrift des Endverbrauchers/Kunden vorliegt, ist die Anschrift der Marktlokation zu übermitteln — informational note, always applies
        ConditionResult::True
    }

    /// [558] Hinweis: Diese Information kann freiwillig ausgetauscht werden
    fn evaluate_558(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: This information can be exchanged voluntarily.
        // No evaluatable boolean logic — purely documentary.
        ConditionResult::Unknown
    }

    /// [559] Hinweis: Die Korrespondenzanschrift des Endverbrauchers/Kunden wird nicht zur Identifikation genutzt
    fn evaluate_559(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Correspondence address of end consumer/customer is not used for identification.
        // No evaluatable boolean logic — purely documentary.
        ConditionResult::Unknown
    }

    /// [560] Hinweis: Die Angabe Name und Adresse für die Ablesekarte wird nicht zur Identifikation genutzt
    fn evaluate_560(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Name and address for Ablesekarte (meter reading card) is not used
        // for identification purposes. No evaluatable boolean logic — purely documentary.
        ConditionResult::Unknown
    }

    /// [566] Hinweis: Altlieferant
    fn evaluate_566(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: 'Altlieferant' (previous supplier). Informational label for the
        // market participant role context; no evaluatable boolean logic.
        ConditionResult::Unknown
    }

    /// [567] Hinweis: Neulieferant
    fn evaluate_567(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: 'Neulieferant' (new supplier). Informational label for the
        // market participant role context; no evaluatable boolean logic.
        ConditionResult::Unknown
    }

    /// [570] Hinweis: Netzbetreiber Alt
    fn evaluate_570(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Netzbetreiber Alt — informational note, always applies
        ConditionResult::True
    }

    /// [571] Hinweis: Auslösender Marktpartner (LFA bei STS+7++ZG9, LFN bei STS+7++ZH0, NB bei STS+7++ZH1)
    fn evaluate_571(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Auslösender Marktpartner (LFA bei STS+7++ZG9, LFN bei STS+7++ZH0, NB bei STS+7++ZH1) — informational note, always applies
        ConditionResult::True
    }

    /// [572] Hinweis: Kundenname aus Anmeldung Lieferant neu
    fn evaluate_572(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Kundenname aus Anmeldung Lieferant neu — informational note, always applies
        ConditionResult::True
    }

    /// [581] Hinweis: Es ist das nächst mögliche Kündigungsdatum anzugeben
    fn evaluate_581(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Es ist das nächst mögliche Kündigungsdatum anzugeben — informational note, always applies
        ConditionResult::True
    }

    /// [583] Hinweis: Verwendung der ID der Marktlokation
    fn evaluate_583(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Verwendung der ID der Marktlokation — informational note, always applies
        ConditionResult::True
    }

    /// [584] Hinweis: Verwendung der ID der Messlokation
    fn evaluate_584(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Verwendung der ID der Messlokation — informational note, always applies
        ConditionResult::True
    }

    /// [590] Hinweis: Es ist die ID der Marktlokation, welche dem LF zugeordnet sind, sowie alle Identifikatoren der Messlokationen anzugeben
    fn evaluate_590(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Es ist die ID der Marktlokation, welche dem LF zugeordnet sind, sowie alle Identifikatoren der Messlokationen anzugeben — informational note, always applies
        ConditionResult::True
    }

    /// [601] Hinweis: Es ist die ID der Marktlokation und alle Identifikatoren der Messlokationen anzugeben.
    fn evaluate_601(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Es ist die ID der Marktlokation und alle Identifikatoren der Messlokationen anzugeben — informational note, always applies
        ConditionResult::True
    }

    /// [621] Hinweis: Es ist der MSB anzugeben, welcher ab dem Zeitpunkt der Lokation zugeordnet ist, der in DTM+76 (Datum zum geplanten Leistungsbeginn) genannt ist.
    fn evaluate_621(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Es ist der MSB anzugeben, welcher ab dem Zeitpunkt der Lokation zugeordnet ist, der in DTM+76 (Datum zum geplanten Leistungsbeginn) genannt ist.
        ConditionResult::True
    }

    /// [622] Hinweis: Falls die OBIS-Kennzahl für mehrere Marktrollen relevant ist, so muss die Segmentgruppe pro Marktrolle wiederholt werden
    fn evaluate_622(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Falls die OBIS-Kennzahl für mehrere Marktrollen relevant ist, so muss die Segmentgruppe pro Marktrolle wiederholt werden
        ConditionResult::True
    }

    /// [636] Hinweis: Dieses RFF klassifiziert mit einem Code im DE1153 die in derselben Segmentgruppe enthaltenen DTM zu einem Markt- bzw. Messlokation relevanten Inhalt
    fn evaluate_636(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Dieses RFF klassifiziert mit einem Code im DE1153 die in derselben Segmentgruppe enthaltenen DTM zu einem Markt- bzw. Messlokation relevanten Inhalt
        ConditionResult::True
    }

    /// [637] Hinweis: Bei Verpflichtungsanfrage
    fn evaluate_637(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Bei Verpflichtungsanfrage — informational note, always applies
        ConditionResult::True
    }

    /// [638] Hinweis: Bei Aufforderung zur Übernahme der einzelnen Messlokation durch den gMSB
    fn evaluate_638(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Bei Aufforderung zur Übernahme der einzelnen Messlokation durch den gMSB — informational note, always applies
        ConditionResult::True
    }

    /// [643] Hinweis: Nachfolgender Netzbetreiber
    fn evaluate_643(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Nachfolgender Netzbetreiber — informational note, always applies
        ConditionResult::True
    }

    /// [644] Hinweis: Wenn in der zugehörigen Anmeldung (44001) in diesem Segmente "Einzug in Neuanlage" (SG4 STS+7++E02) enthalten ist, wird in diesem Geschäftsvorfall  der Code E01 verwendet
    fn evaluate_644(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: informational note about E01/E02 usage in Bestätigung — always applies
        ConditionResult::True
    }

    /// [651] Hinweis: Bei einer Marktraumumstellung (Gas) ist zu beachten, dass die tatsächliche Meldung zur Marktraumumstellung auf Ebene der Messlokation durch Angabe der Gasqualität erfolgt. Die betroffene...
    fn evaluate_651(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Marktraumumstellung Gas — informational note about Messlokation reporting — always applies
        ConditionResult::True
    }

    /// [654] Hinweis: Es sind ausschließlich die Daten zum Meldepunkt anzugeben, die für den in NAD+MR (Nachrichtenempfänger) adressierten Marktpartner relevant ist
    fn evaluate_654(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: Only data relevant to the addressed Marktpartner (NAD+MR) should be provided — always applies
        ConditionResult::True
    }

    /// [655] Hinweis: Wenn ein Zähler an einen Mengenumwerter angeschlossen ist werden an dem Zähler keine OBIS-Kennzahlen angegeben Hier gibt es nur OBIS Kennzahlen vom Mengenumwerter
    fn evaluate_655(&self, _ctx: &EvaluationContext) -> ConditionResult {
        // Hinweis: When a meter is connected to a volume converter, no OBIS codes are given for the meter — always applies
        ConditionResult::True
    }

    /// [902] Format: Möglicher Wert: ≥ 0
    fn evaluate_902(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check("QTY", 0, 1, |val| validate_numeric(val, ">=", 0.0))
    }

    /// [907] Format: max. 4 Nachkommastellen
    fn evaluate_907(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check("QTY", 0, 1, |val| validate_max_decimal_places(val, 4))
    }

    /// [912] Format: max. 6 Nachkommastellen
    fn evaluate_912(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check("QTY", 0, 1, |val| validate_max_decimal_places(val, 6))
    }

    /// [930] Format: max. 2 Nachkommastellen
    fn evaluate_930(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check("QTY", 0, 1, |val| validate_max_decimal_places(val, 2))
    }

    /// [931] Format: ZZZ = +00
    fn evaluate_931(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check("DTM", 0, 1, validate_timezone_utc)
    }

    /// [934] Format: HHMM = 0400
    fn evaluate_934(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check("DTM", 0, 1, |val| validate_hhmm_equals(val, "0400"))
    }

    /// [935] Format: HHMM = 0500
    fn evaluate_935(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check("DTM", 0, 1, |val| validate_hhmm_equals(val, "0500"))
    }

    /// [937] Format: keine Nachkommastelle
    fn evaluate_937(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check("QTY", 0, 1, |val| validate_max_decimal_places(val, 0))
    }

    /// [938] Format: Möglicher Wert: &lt;= 10
    fn evaluate_938(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check("QTY", 0, 1, |val| validate_numeric(val, "<=", 10.0))
    }

    /// [950] Format: Marktlokations-ID
    fn evaluate_950(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check_qualified("LOC", 0, "Z16", 1, 0, validate_malo_id)
    }

    /// [951] Format: Zählpunktbezeichnung
    fn evaluate_951(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check_qualified("LOC", 0, "Z19", 1, 0, validate_zahlpunkt)
    }

    /// [952] Format: Gerätenummer nach DIN 43863-5
    // REVIEW: DIN 43863-5 Gerätenummer is an alphanumeric device identifier with a max length of 20 characters. No dedicated validator exists, so validate_max_length(20) is used as the structural check. The exact segment/element depends on the AHB table position — IDE is the most common carrier for device IDs in UTILMD Gas, with PIA as a fallback. Medium confidence due to uncertainty about the exact segment without the full AHB table context. (medium confidence)
    fn evaluate_952(&self, ctx: &EvaluationContext) -> ConditionResult {
        // Format: Gerätenummer nach DIN 43863-5 — alphanumeric, max 20 characters
        // DIN 43863-5 device numbers appear in IDE segment (element 1, component 0)
        // or in SG8 PIA segments for device identification
        let ide_segs = ctx.find_segments("IDE");
        if let Some(val) = ide_segs
            .first()
            .and_then(|s| s.elements.get(1))
            .and_then(|e| e.first())
            .filter(|v| !v.is_empty())
        {
            return validate_max_length(val, 20);
        }
        // Fallback: check PIA segment for device number (qualifier 5 = substitute product)
        let pia_segs = ctx.find_segments_with_qualifier("PIA", 0, "5");
        match pia_segs
            .first()
            .and_then(|s| s.elements.get(1))
            .and_then(|e| e.first())
        {
            Some(val) => validate_max_length(val, 20),
            None => ConditionResult::False, // segment absent → condition not applicable
        }
    }

    /// [953] Format: Marktlokations-ID oder Zählpunktbezeichnung
    fn evaluate_953(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.format_check("LOC", 1, 0, validate_malo_or_zahlpunkt)
    }

    /// [2061] Segment bzw. Segmentgruppe ist genau einmal je SG4 IDE (Vorgang) anzugeben
    // REVIEW: Condition states the segment/group is to be given exactly once per SG4 IDE (Vorgang). As a boolean applicability condition, this is True when the IDE segment (Vorgangsidentifikator) is present, indicating the SG4 context exists. Cardinality enforcement (exactly once) is a structural rule beyond a simple boolean evaluator. (medium confidence)
    fn evaluate_2061(&self, ctx: &EvaluationContext) -> ConditionResult {
        ConditionResult::from(ctx.has_segment("IDE"))
    }

    /// [2119] Je SG8 SEQ+Z13 (Smartmeter-Gateway) ist genau einmal die Segmentgruppe anzugeben
    fn evaluate_2119(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.any_group_has_qualifier("SEQ", 0, "Z13", &["SG4", "SG8"])
    }

    /// [2284] Für jede Messlokations-ID im SG5 LOC+172 (Meldepunkt) DE3225 genau einmal anzugeben
    fn evaluate_2284(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.any_group_has_qualifier("LOC", 0, "172", &["SG4", "SG5"])
    }

    /// [2286] Für jede SEQ+Z18 (Daten der Messlokation) mindestens einmal anzugeben
    fn evaluate_2286(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.any_group_has_qualifier("SEQ", 0, "Z18", &["SG4", "SG8"])
    }

    /// [2287] Für jede SEQ+Z03 (Zähleinrichtungsdaten) mindestens einmal anzugeben
    fn evaluate_2287(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.any_group_has_qualifier("SEQ", 0, "Z03", &["SG4", "SG8"])
    }

    /// [2335] Für jede SEQ+Z02 (OBIS-Daten der Marktlokation), welche im PIA+5 die OBIS-Kennzahl 7-20:99.33.17/ 7-0:33.86.0 übermittelt, genau einmal anzugeben
    // REVIEW: Condition states: to be given exactly once for each SEQ+Z02 (OBIS-Daten der Marktlokation) where PIA+5 transmits OBIS code 7-20:99.33.17 or 7-0:33.86.0. Per segment structure reference, PIA elements[1][0] (DE7140) holds the OBIS code. Checks message-wide PIA+5 for the target OBIS values, then verifies SEQ+Z02 is present. Since PIA is always nested in the same SG8 as its SEQ, message-wide PIA check is a valid approximation when group navigator is unavailable. (medium confidence)
    fn evaluate_2335(&self, ctx: &EvaluationContext) -> ConditionResult {
        {
            // Check for PIA+5 with specific OBIS codes 7-20:99.33.17 or 7-0:33.86.0 at elements[1][0]
            let pias = ctx.find_segments_with_qualifier("PIA", 0, "5");
            let has_target_obis = pias.iter().any(|pia| {
                pia.elements
                    .get(1)
                    .and_then(|e| e.first())
                    .map(|v| v == "7-20:99.33.17" || v == "7-0:33.86.0")
                    .unwrap_or(false)
            });
            if !has_target_obis {
                return ConditionResult::False;
            }
            // Also verify SEQ+Z02 (OBIS-Daten der Marktlokation) is present — PIA is always co-located in the same SG8
            ctx.any_group_has_qualifier("SEQ", 0, "Z02", &["SG4", "SG8"])
        }
    }

    /// [2353] Für jede SEQ+Z09 (Mengenumwerter-Daten) mindestens einmal anzugeben
    fn evaluate_2353(&self, ctx: &EvaluationContext) -> ConditionResult {
        ctx.any_group_has_qualifier("SEQ", 0, "Z09", &["SG4", "SG8"])
    }
}