How To Fix /IWFND/CM_MGW_RT144 - Association &1: referential constraint property not found in entity &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 144

• Message text: Association &1: referential constraint property not found in entity &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_MGW_RT144 - Association &1: referential constraint property not found in entity &2 ?

  The SAP error message /IWFND/CM_MGW_RT144 indicates that there is an issue with an association in your OData service. Specifically, the error message states that a referential constraint property is not found in the specified entity. This typically occurs when the OData service is trying to resolve an association between two entities, but the property that is supposed to establish that relationship is missing or incorrectly defined.
  Cause:
  
  Missing Property: The property that is supposed to serve as the referential constraint in the association is not defined in the entity.
  Incorrect Association Definition: The association might be incorrectly defined in the metadata, leading to a mismatch between the entities.
  Data Model Changes: If there have been recent changes to the data model (e.g., adding or removing fields), the OData service may not be updated accordingly.
  Service Registration Issues: The OData service might not be properly registered or activated in the SAP Gateway.
  
  Solution:
  
  Check Entity Definitions: Verify that the property defined in the association exists in the target entity. Ensure that the property names and types match exactly.
  Update Metadata: If there have been changes to the underlying data model, regenerate the metadata for the OData service. This can be done using transaction code /IWFND/MAINT_SERVICE to maintain the service and regenerate the metadata.
  Review Association Definitions: Check the association definitions in the service's metadata. Ensure that the associations are correctly defined and that the referential constraints are properly set up.
  Activate/Reactivate the Service: Sometimes, simply deactivating and reactivating the OData service can resolve issues related to metadata inconsistencies.
  Check for Errors in the Service Implementation: If you have custom logic in the service implementation, ensure that it correctly handles the associations and that there are no coding errors.
  
  Related Information:
  
  Transaction Codes: Use /IWFND/MAINT_SERVICE to manage OData services and /IWFND/ERROR_LOG to check for additional error logs related to the OData service.
  SAP Notes: Check for any relevant SAP Notes that might address known issues with the specific version of SAP you are using.
  Documentation: Refer to the SAP Gateway documentation for detailed information on how to define entities, associations, and referential constraints.
  
  By following these steps, you should be able to identify and resolve the issue causing the error message /IWFND/CM_MGW_RT144.