How To Fix /IWFND/CM_DESIGNTIME002 - Remote RFC signature could not be read: Function module not found

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_DESIGNTIME -

• Message number: 002

• Message text: Remote RFC signature could not be read: Function module not found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_DESIGNTIME002 - Remote RFC signature could not be read: Function module not found ?

  The SAP error message /IWFND/CM_DESIGNTIME002 indicates that the system is unable to find the specified function module when trying to read the remote RFC (Remote Function Call) signature. This error typically occurs in the context of SAP Gateway services, particularly when there is an issue with the configuration or availability of the function module that is supposed to be called.
  Causes:
  
  Function Module Not Created: The function module that is being referenced does not exist in the system.
  Incorrect Naming: There may be a typo or incorrect naming in the service definition or the function module name.
  Transport Issues: If the function module was recently transported from another system, it may not have been transported correctly or may not exist in the target system.
  Authorization Issues: The user executing the request may not have the necessary authorizations to access the function module.
  System Configuration: The system may not be properly configured to access the function module, especially in a distributed environment.
  
  Solutions:
  
  
  Check Function Module Existence:
  
  Go to transaction SE37 (Function Builder) and check if the function module exists. If it does not exist, you may need to create it or transport it from another system.
  
  
  
  Verify Naming:
  
  Ensure that the function module name is correctly specified in the service definition. Check for any typos or discrepancies.
  
  
  
  Transport Check:
  
  If the function module was recently transported, verify that the transport request was successful and that the function module is active in the target system.
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to execute the function module. You can check this using transaction SU53 after the error occurs.
  
  
  
  System Configuration:
  
  If you are working in a distributed environment, ensure that the RFC destination is correctly configured and that the function module is accessible from the calling system.
  
  
  
  Activate Service:
  
  If the function module is part of an OData service, ensure that the service is activated in transaction /IWFND/MAINT_SERVICE.
  
  
  
  Check Logs:
  
  Review the system logs (transaction SLG1) for any additional error messages that may provide more context about the issue.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific error message for any known issues or patches.
  Documentation: Review the documentation for the specific OData service or function module to ensure that all prerequisites are met.
  Community Forums: Consider searching or posting in SAP Community forums for additional insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the issue related to the /IWFND/CM_DESIGNTIME002 error message.