OCI document understanding service throws NotAuthorizedOrNotFound exception when permission is already provided

[lmpeiris]

While following the tutorial provided at https://github.com/oracle-samples/oci-data-science-ai-samples/tree/main/labs/ai-document-understanding/workshops we are getting following error. The code for the tutorial is provided in https://github.com/oracle-samples/oci-data-science-ai-samples/blob/main/ai_services/document_understanding/python/text_extraction/object_storage_text_extraction_demo.py

oci.exceptions.ServiceError: {'target_service': 'ai_service_document', 'status': 404, 'code': 'NotAuthorizedOrNotFound', 'opc-request-id': 'B066D3F6F3DA413FABFEC74182272335/1189EBD93D14DAFFC69519BCF1A966DA/ED8EDBEFFC8B56C9C135495E4B214549', 'message': 'Authorization failed or requested resource not found.', 'operation_name': 'create_processor_job', 'timestamp': '2025-02-03T12:47:28.249714+00:00', 'client_version': 'Oracle-PythonSDK/2.143.1', 'request_endpoint': 'POST https://document.aiservice.ap-mumbai-1.oci.oraclecloud.com/20221109/processorJobs', 'logging_tips': 'To get more info on the failing request, refer to https://docs.oracle.com/en-us/iaas/tools/python/latest/logging.html for ways to log the request/response details.', 'troubleshooting_tips': "See https://docs.oracle.com/iaas/Content/API/References/apierrors.htm#apierrors_404__404_notauthorizedornotfound for more information about resolving this error. Also see https://docs.oracle.com/iaas/api/#/en/document-understanding/20221109/ProcessorJob/CreateProcessorJob for details on this operation's requirements. If you are unable to resolve this ai_service_document issue, please contact Oracle support and provide them this full error message."}

Below are the iam permissions provided for the user account

allow group mygroup to use ai-service-document-family in tenancy
allow group mygroup to inspect compartments in tenancy
allow group mygroup to manage object-family in compartment mycompart
allow group mygroup to read all-resources in compartment mycompart

There is no issue with permissions on the python script as user is able to list buckets etc.. in the compartment.
Attempting the UI also throws the same error