How To Fix /IWBEP/CM_CP119 - Operation '&1': Parameter '&2' generation failed

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_CP -

• Message number: 119

• Message text: Operation '&1': Parameter '&2' generation failed

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_CP119 - Operation '&1': Parameter '&2' generation failed ?

  The SAP error message /IWBEP/CM_CP119 Operation '&1': Parameter '&2' generation failed typically occurs in the context of SAP Gateway and OData services. This error indicates that there was a failure in generating the parameters for a specific operation in an OData service. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  Incorrect Data Types: The parameters defined in the OData service may have incorrect or unsupported data types.
  Missing Annotations: Required annotations for the parameters might be missing in the service definition.
  Model Inconsistencies: There could be inconsistencies in the data model or the service implementation.
  Service Metadata Issues: Problems with the service metadata can lead to issues in parameter generation.
  Code Issues: Custom code in the service implementation might be causing the failure.
  
  Solutions:
  
  Check Data Types: Review the data types of the parameters in the OData service definition. Ensure they are correctly defined and supported.
  Review Annotations: Ensure that all required annotations for the parameters are present in the service definition.
  Validate the Model: Use transaction /IWFND/MAINT_SERVICE to check the service and its associated model for any inconsistencies.
  Regenerate the Service: If there are changes in the underlying data model, regenerate the OData service using transaction /IWFND/MAINT_SERVICE or /IWBEP/REG_SERVICE.
  Check Implementation Code: If you have custom logic in the service implementation, review the code for any potential issues that could lead to parameter generation failures.
  Debugging: Use the debugger to trace the execution of the OData service and identify where the parameter generation is failing.
  
  Related Information:
  
  Transaction Codes:
  
  /IWFND/MAINT_SERVICE: To maintain OData services.
  /IWBEP/REG_SERVICE: To register or regenerate OData services.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues related to this error.
  Documentation: Review the SAP Gateway and OData documentation for best practices in service implementation and parameter handling.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support or consulting with a technical expert who specializes in SAP Gateway and OData services.