# CreateStandaloneAdRequestCitiesInnerOneOf
## Properties
**key** | **String** | City id from /v1/ads/targeting/search results (Meta city key, Google geo target constant id, TikTok location id). |
**radius** | Option<**f64**> | Optional radius around the city. Must be set together with distance_unit. Meta enforces a minimum city radius (~17 km / 10 mi); smaller values resolve to a 0-size audience and the ad fails at launch. For a tighter catchment use customLocations (lat/lng). | [optional]
**distance_unit** | Option<**DistanceUnit**> | Unit for radius. Required if radius is set. (enum: mile, kilometer) | [optional]
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