How To Fix /IWBEP/CM_MGW_RT016 - Value control property '&1' is not set as technical property

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 016

• Message text: Value control property '&1' is not set as technical property

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT016 - Value control property '&1' is not set as technical property ?

  The SAP error message /IWBEP/CM_MGW_RT016 indicates that a value control property is not set as a technical property in the context of an OData service. This error typically arises when there is a mismatch or misconfiguration in the OData service definition, particularly regarding the handling of value control properties.
  Cause:
  
  Missing Configuration: The value control property is not defined correctly in the service metadata or is missing from the technical properties.
  Incorrect Annotations: The annotations for the OData service might not be set correctly, leading to the system not recognizing the property as a technical property.
  Service Implementation Issues: There may be issues in the implementation of the service, such as missing or incorrect logic in the data provider class.
  
  Solution:
  
  
  Check Service Metadata: Review the metadata of the OData service to ensure that the value control property is defined correctly. You can do this by accessing the service's metadata URL (e.g., /sap/opu/odata/sap/<service_name>/$metadata).
  
  
  Update Annotations: Ensure that the annotations for the value control property are correctly set in the service definition. You may need to add or modify annotations in the relevant CDS view or service definition.
  
  
  Implement Technical Properties: If the property is supposed to be a technical property, ensure that it is marked as such in the service implementation. This may involve modifying the ABAP code in the data provider class to include the property as a technical property.
  
  
  Regenerate the Service: After making changes, regenerate the OData service to ensure that the changes are reflected. You can do this using transaction /IWFND/MAINT_SERVICE to maintain and activate the service.
  
  
  Check for Updates: Ensure that your SAP system is up to date with the latest support packages and notes, as there may be fixes related to OData services in newer versions.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to OData services and the specific error message for any known issues or additional guidance.
  Documentation: Refer to the SAP Gateway documentation for detailed information on configuring OData services and handling value control properties.
  Community Forums: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error message /IWBEP/CM_MGW_RT016 and ensure that your OData service is functioning correctly.