Struct MT204 

pub struct MT204 {
    pub field_20: Field20,
    pub field_19: Field19,
    pub field_30: Field30,
    pub field_57_seq_a: Option<Field57DebtInstitution>,
    pub field_58: Option<Field58>,
    pub field_72_seq_a: Option<Field72>,
    pub transactions: Vec<MT204Transaction>,
}

MT204: Financial Markets Direct Debit Message

Purpose

Used for direct debit transactions in financial markets, particularly for settlement of trades and market-related obligations. This message enables efficient collection of funds from multiple debtors in financial market transactions, supporting both single and bulk debit operations.

Scope

This message is:

• Used between financial institutions for market-related direct debits
• Designed for settlement of securities trades and derivatives transactions
• Applicable for margin calls and collateral management
• Used for collecting clearing house obligations
• Compatible with central counterparty (CCP) settlement systems
• Limited to a maximum of 10 transactions per message

Key Features

• Two-Sequence Structure: Common reimbursement details and individual transaction details
• Bulk Processing: Processes up to 10 direct debit transactions in one message
• Sum Validation: Built-in validation that sum of transactions equals total amount
• Currency Consistency: All transactions must use the same currency
• Efficient Settlement: Optimized for financial markets settlement processes
• Reimbursement Focus: Streamlined for financial institution reimbursements

Common Use Cases

• Securities trade settlement collections
• Derivatives margin call collections
• Clearing house member collections
• Central securities depository (CSD) fee collections
• Exchange membership fee collections
• Market maker obligation settlements
• Cross-border financial market settlements

Message Structure

Sequence A (Common Elements - Reimbursement Details - Mandatory, Single)

• Field 20: Transaction Reference Number (mandatory) - Unique message identifier
• Field 19: Sum of Amounts (mandatory) - Total amount to be collected
• Field 30: Value Date (mandatory) - Settlement date for all transactions
• Field 57: Account With Institution (optional) - Institution holding the account
• Field 58: Beneficiary Institution (optional) - Final beneficiary institution
• Field 72: Sender to Receiver Information (optional) - Additional instructions

Sequence B (Transaction Details - Mandatory, Repetitive, Max 10)

• Field 20: Transaction Reference Number (mandatory) - Individual transaction reference
• Field 21: Related Reference (optional) - Reference to related transaction/trade
• Field 32B: Transaction Amount (mandatory) - Individual debit amount
• Field 53: Debit Institution (mandatory) - Institution to be debited
• Field 72: Sender to Receiver Information (optional) - Transaction-specific instructions

Network Validation Rules

• C1: Field 19 amount must equal sum of all Field 32B amounts
• C2: Currency in all Field 32B occurrences must be identical
• C3: Maximum 10 occurrences of Sequence B allowed (T10 error if exceeded)

Integration Considerations

• Trading Systems: Direct integration with trading and settlement platforms
• CCP Systems: Compatible with central counterparty clearing systems
• Risk Management: Integration with margin and collateral management systems
• Regulatory Reporting: Supports transaction reporting requirements

Relationship to Other Messages

• Triggers: Often triggered by trade confirmations or margin calculations
• Related: Works with MT202 for cover payments and MT210 for pre-notifications
• Confirmations: May generate MT900 (debit) confirmations
• Status: May receive MT296 for cancellation responses
• Reporting: Reflected in MT940/MT950 account statements

Fields

field_20: Field20

field_19: Field19

field_30: Field30

field_57_seq_a: Option<Field57DebtInstitution>

field_58: Option<Field58>

field_72_seq_a: Option<Field72>

transactions: Vec<MT204Transaction>

Implementations

impl MT204

pub fn validate() -> &'static str

Get validation rules for this message type

Trait Implementations

impl Clone for MT204

fn clone(&self) -> MT204

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MT204

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MT204

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for MT204

fn eq(&self, other: &MT204) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for MT204

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl SwiftMessageBody for MT204

fn message_type() -> &'static str

Get the message type identifier (e.g., “103”, “202”)

fn from_fields( fields: HashMap<String, Vec<(String, usize)>>, ) -> SwiftResult<Self>

Create from field map with sequential consumption tracking

fn from_fields_with_config( fields: HashMap<String, Vec<(String, usize)>>, config: &ParserConfig, ) -> Result<ParseResult<Self>, ParseError>

Create from field map with configuration for error collection

fn to_fields(&self) -> HashMap<String, Vec<String>>

Convert to field map

fn required_fields() -> Vec<&'static str>

Get required field tags for this message type

fn optional_fields() -> Vec<&'static str>

Get optional field tags for this message type

fn to_ordered_fields(&self) -> Vec<(String, String)>

Convert to ordered field list for MT serialization Returns fields in the correct sequence order for multi-sequence messages

impl StructuralPartialEq for MT204