# Quickstart: ID Synchronization

## Getting Started

1.  **Service Initialization**:
    Ensure the `IdMappingService` scheduler is started when the backend application boots up.

    ```python
    # In app.py or similar startup logic
    from core.mapping_service import IdMappingService
    
    mapping_service = IdMappingService()
    mapping_service.start_scheduler(interval_minutes=30)
    ```

2.  **Running Migrations with Cross-Filter Sync**:
    When calling the migration endpoint, set `fix_cross_filters=True`. The engine will automatically pause, do a technical import, sync IDs, patch the manifest, and do a final import.

    *(No additional quickstart steps required as this logic is embedded directly into the migration engine).*