How To Fix GENIL_WCF137 - Relation &1: handler class &2 does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: GENIL_WCF - Messages for genIL Model Editor

• Message number: 137

• Message text: Relation &1: handler class &2 does not exist

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message GENIL_WCF137 - Relation &1: handler class &2 does not exist ?

  The SAP error message GENIL_WCF137 indicates that there is a problem with a handler class that is expected to be present in the system but is not found. This error typically occurs in the context of the SAP Gateway or when working with the Generic Interaction Layer (GENIL) and the Component-Based Development (CBD) framework.
  Cause:
  The error message can be caused by several factors, including:
  
  
  Missing Handler Class: The specified handler class (denoted by &2 in the error message) does not exist in the system. This could be due to a missing implementation or an incorrect configuration.
  
  
  Incorrect Configuration: The configuration for the relation (denoted by &1) may be pointing to a handler class that has not been properly defined or activated.
  
  
  Transport Issues: If the handler class was recently transported from another system, it may not have been included in the transport request, or the transport may have failed.
  
  
  Development Errors: If the handler class was supposed to be created as part of a custom development, it may not have been implemented correctly.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check for Existence of the Handler Class:
  
  Use transaction code SE80 (Object Navigator) or SE24 (Class Builder) to check if the handler class exists in the system.
  If it does not exist, you may need to create it or transport it from another system.
  
  
  
  Review Configuration:
  
  Check the configuration settings for the relation in the relevant GENIL model. Ensure that the handler class is correctly specified and that there are no typos or incorrect references.
  
  
  
  Transport Check:
  
  If the handler class was recently transported, verify that the transport request was successful and that all necessary objects were included.
  You can check the transport logs for any errors.
  
  
  
  Implement Missing Logic:
  
  If the handler class is supposed to be custom-developed, ensure that the implementation is complete and that it adheres to the expected interface and methods.
  
  
  
  Activate the Class:
  
  If the handler class exists but is not activated, make sure to activate it in the ABAP Workbench.
  
  
  
  Check for Dependencies:
  
  Ensure that any dependencies required by the handler class are also present and correctly configured.
  
  
  
  Related Information:
  
  Transaction Codes: SE80 (Object Navigator), SE24 (Class Builder), SE37 (Function Module), SE11 (Data Dictionary).
  Documentation: Refer to SAP Help Portal for documentation on GENIL and the specific components you are working with.
  Debugging: If you have access to debugging tools, you can set breakpoints in the relevant areas to trace the execution and identify where the error occurs.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis or development team for further assistance, as they may have more insights into the specific configurations and custom developments in your system.