How To Fix /IWFND/CM_MGW_RT124 - Property '&1' not found on principal '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 124

• Message text: Property '&1' not found on principal '&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 /IWFND/CM_MGW_RT124 - Property '&1' not found on principal '&2' ?

  The SAP error message /IWFND/CM_MGW_RT124 Property '&1' not found on principal '&2' typically occurs in the context of SAP Gateway and OData services. This error indicates that the specified property (represented by &1) is not found on the entity or principal (represented by &2) that is being accessed or queried.
  Causes:
  
  Missing Property: The property you are trying to access does not exist in the data model or entity definition.
  Incorrect Entity Type: The entity type being queried may not match the expected type that contains the property.
  Model Mismatch: There may be a mismatch between the OData service metadata and the actual data model in the backend.
  Service Activation: The OData service may not be properly activated or may not have the latest changes reflected.
  Authorization Issues: Sometimes, authorization issues can prevent access to certain properties, leading to this error.
  
  Solutions:
  
  
  Check Entity Definition: Verify that the property you are trying to access is defined in the entity type of the OData service. You can do this by checking the service metadata (usually accessible via the service URL with $metadata).
  
  
  Update Service: If you have recently made changes to the data model or entity definitions, ensure that the OData service is reactivated. You can do this in the SAP Gateway Service Builder (transaction code SEGW).
  
  
  Check Service Registration: Ensure that the OData service is properly registered and activated in the SAP Gateway. You can check this in transaction IWFND/MAINT_SERVICE.
  
  
  Debugging: Use the SAP Gateway Client (transaction /IWFND/GW_CLIENT) to test the OData service and see if the error persists. This can help isolate whether the issue is with the service or the calling application.
  
  
  Authorization Check: Ensure that the user has the necessary authorizations to access the property in question. You may need to check the roles and authorizations assigned to the user.
  
  
  Review Logs: Check the SAP Gateway error logs (transaction IWFND/ERROR_LOG) for more detailed information about the error and any related issues.
  
  
  Related Information:
  
  OData Services: Understanding how OData services work in SAP Gateway can help in troubleshooting issues related to entity properties.
  SAP Gateway Service Builder: Familiarity with transaction SEGW is essential for managing and modifying OData services.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution. If the problem persists, consider reaching out to SAP support for further assistance.