How To Fix GENIL_WCF121 - Object &3 - method &1: parameter structure is missing

SAP Error Message - Details

• Message type: E = Error

• Message class: GENIL_WCF - Messages for genIL Model Editor

• Message number: 121

• Message text: Object &3 - method &1: parameter structure is missing

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message GENIL_WCF121 - Object &3 - method &1: parameter structure is missing ?

  The SAP error message GENIL_WCF121 indicates that there is a problem with a method in the SAP Gateway framework, specifically related to a missing parameter structure. This error typically occurs in the context of the SAP Gateway and the underlying Business Object Layer (BOL) when a method is called without the required parameter structure.
  Cause:
  
  Missing Parameter Structure: The error suggests that the method being invoked is expecting a certain parameter structure that is not being provided. This could be due to a misconfiguration in the service definition or an issue in the implementation of the method.
  Incorrect Service Definition: If the service definition in the SAP Gateway is not correctly set up, it may lead to this error. This includes missing or incorrectly defined parameters in the service's metadata.
  Model Changes: If there have been recent changes to the underlying data model or the BOL, and the service has not been updated accordingly, this can lead to discrepancies.
  Code Issues: There may be issues in the custom code or enhancements that are affecting the method's execution.
  
  Solution:
  
  Check Service Definition: Review the service definition in the SAP Gateway. Ensure that all required parameters for the method are correctly defined and that the parameter structure is present.
  Update Metadata: If there have been changes to the underlying model, regenerate the service metadata to ensure that it reflects the current state of the model.
  Debugging: Use transaction /IWFND/ERROR_LOG to check for additional error details. You can also debug the service implementation to identify where the parameter structure is missing.
  Review Code: If there are custom implementations, review the code for the method to ensure that it is correctly handling the parameters and that the expected structures are being passed.
  Check BOL Configuration: Ensure that the Business Object Layer (BOL) is correctly configured and that the necessary parameter structures are defined in the BOL model.
  
  Related Information:
  
  Transaction Codes: Use transaction SE80 to check the service implementation and SE37 to check the function modules if applicable.
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide guidance on similar issues.
  Documentation: Review the SAP Gateway documentation for best practices on service definition and parameter handling.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurs.