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

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 144

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

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

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

  The SAP error message /IWBEP/CM_MGW_RT144 typically occurs in the context of SAP Gateway and OData services. This error indicates that there is an issue with the referential integrity of the data model, specifically that a property defined as a referential constraint in an association cannot be found in the specified entity.
  Cause:
  
  Missing Property: The property that is supposed to be part of the association is not defined in the entity type.
  Incorrect Association Definition: The association might be incorrectly defined in the metadata, leading to a mismatch between the association and the entity properties.
  Model Changes: If there have been recent changes to the data model (like adding or removing properties), the OData service might not be updated accordingly.
  Service Registration Issues: The OData service might not be properly registered or activated in the SAP Gateway.
  
  Solution:
  
  Check Entity Definition: Verify that the property mentioned in the error message is correctly defined in the entity type. Ensure that it matches the expected name and type.
  Review Association Definition: Check the association definition in the metadata. Ensure that it correctly references the properties in the associated entities.
  Update OData Service: If there have been changes to the data model, regenerate the OData service to ensure that the metadata is up to date. This can be done using transaction code /IWFND/MAINT_SERVICE to maintain the service.
  Activate the Service: Ensure that the OData service is activated. You can do this in the same transaction mentioned above.
  Check for Errors in the Model: Use transaction /IWBEP/ERROR_LOG to check for any other related errors that might provide more context.
  Clear Cache: Sometimes, clearing the cache can resolve issues related to outdated metadata. You can do this using transaction /IWFND/CACHE.
  
  Related Information:
  
  SAP Gateway: This is the technology that allows you to connect devices, environments, and platforms to SAP systems. Understanding how it works can help in troubleshooting issues.
  OData Services: Familiarize yourself with how OData services are structured and how associations and entity types are defined.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting the SAP Community for further assistance.