How To Fix /IWBEP/CM_MGW_RT012 - Unsupported combination of query options

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 012

• Message text: Unsupported combination of query options

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT012 - Unsupported combination of query options ?

  The SAP error message /IWBEP/CM_MGW_RT012 Unsupported combination of query options typically occurs in the context of OData services when there is an issue with the query options being used in a request. This error indicates that the combination of query options specified in the OData request is not supported by the service or the underlying data model.
  Causes:
  
  
  Incompatible Query Options: Certain combinations of query options (like $filter, $expand, $select, etc.) may not be supported together. For example, using $expand with $filter on a property that is not part of the expanded entity can lead to this error.
  
  
  Service Limitations: The OData service may have specific limitations or configurations that restrict the use of certain query options together.
  
  
  Incorrect Syntax: There may be a syntax error in the OData query that leads to an unsupported combination.
  
  
  Data Model Constraints: The underlying data model may not support the requested operations due to relationships or cardinality constraints.
  
  
  Solutions:
  
  
  Review Query Options: Check the OData request and ensure that the combination of query options used is valid. Refer to the OData service documentation to understand which combinations are supported.
  
  
  Simplify the Query: Try simplifying the query by removing some of the query options to see if the error persists. Start with a basic query and gradually add options back to identify the problematic combination.
  
  
  Check Service Metadata: Use the $metadata endpoint of the OData service to review the entity sets and their relationships. This can help you understand the supported operations and constraints.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific OData service you are using. There may be specific guidelines or limitations mentioned regarding query options.
  
  
  Debugging: If you have access to the backend, consider enabling logging or debugging to get more detailed information about the error and the context in which it occurs.
  
  
  Contact Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. Provide them with the details of the request and the error message for better troubleshooting.
  
  
  Related Information:
  
  OData Protocol: Understanding the OData protocol and its query options can help in constructing valid requests.
  SAP Gateway: Familiarize yourself with SAP Gateway and how it handles OData services, as this can provide insights into potential limitations.
  SAP Community: Engaging with the SAP Community can be beneficial, as other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.