Hi team, starting from prefect 3.1.11, I'm seeing the following pydantic validation error, and I suspect this is a bug when creating an object for creating a flow run. I filed a bug issue in https://github.com/PrefectHQ/prefect/issues/16672

prefect.exceptions.PrefectHTTPStatusError: Client error '422 Unprocessable Entity' for url '<http://127.0.0.1:4200/api/deployments/9c692ce5-0945-490a-9f05-5101511c8152/create_flow_run>'
Response: {'exception_message': 'Invalid request received.', 'exception_detail': [{'type': 'extra_forbidden', 'loc': ['body', 'labels'], 'msg': 'Extra inputs are not permitted', 'input': {}}], 'request_body': {'state': {'type': 'SCHEDULED', 'name': 'Scheduled', 'message': None, 'state_details': {'scheduled_time': '2025-01-10T00:21:18.168599Z', 'traceparent': None}, 'data': None}, 'name': None, 'parameters': {}, 'context': {}, 'tags': [], 'idempotency_key': None, 'parent_task_run_id': None, 'job_variables': {}, 'labels': {}}}
For more information check: <https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/422>
An exception occurred.

Such a great catch! Thanks for submitting an issue