Create Entity

Create a new entity with the provided data.

This endpoint creates a new entity using the data provided in the request body. The entity will be validated according to the defined schema and business rules.

Args: entity_info: Complete entity data for creation including: - All required fields as defined in the entity schema - Optional fields with default values - Custom field values if applicable match_existing: Whether to match the payload against an existing entity on its natural key before creating (see the query parameter description). Entity types with no natural key ignore this and always create. user: Authenticated user information (used for audit trails) response: HTTP response object for status code modification

Returns: EntityResponseModel containing: - id: Unique identifier of the newly created entity, or of the existing entity the payload matched - matched: True when the payload matched an existing entity and updated it rather than creating a new one

Note: - Returns HTTP 201 (Created) on successful creation - Returns HTTP 200 (OK) when the payload matched an existing entity - Returns HTTP 206 (Partial Content) if entity is created but some custom fields failed to save - Automatically sets creation timestamp and user information

Raises: HTTPException: - 400: Invalid input data or validation errors - 401: Authentication required - 403: Insufficient permissions to create entities - 409: Entity already exists (if applicable) - 422: Validation error in request data - 500: Internal server error during creation