### New Fields Added | Field | Type | Description | |-------|------|-------------| | `standardised_code` | `Option<StandardisedCode>` | Standardised error code for the GSM rule | | `description` | `Option<String>` | Description of the error | | `user_guidance_message` | `Option<String>` | User-facing guidance message for the error | ### Changes - **API Models **: Added new fields to `GsmCreateRequest`, `GsmUpdateRequest`, and `GsmResponse` - **Database Models**: Added corresponding columns to the GSM table - **Migrations**: Added migration to create new columns in the `gsm` table