How To Fix HREOP008 - Function module &1 could not be called (destination &2): Wrong interface.

SAP Error Message - Details

• Message type: E = Error

• Message class: HREOP - Messages for EOP PERNR check for Customer/Vendor

• Message number: 008

• Message text: Function module &1 could not be called (destination &2): Wrong interface.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message HREOP008 - Function module &1 could not be called (destination &2): Wrong interface. ?

  The SAP error message HREOP008 indicates that there is an issue with calling a function module due to a mismatch in the interface. This typically occurs when the function module being called does not match the expected parameters or structure defined in the destination system.
  Cause:
  
  Interface Mismatch: The function module being called has a different interface than what is expected. This could be due to changes in the function module definition, such as added or removed parameters.
  Incorrect Destination: The destination system (RFC destination) may not be correctly configured or may not have the function module available.
  Version Mismatch: The function module may exist in one system but not in another, or the versions of the function module may differ between systems.
  Authorization Issues: The user may not have the necessary authorizations to call the function module in the target system.
  
  Solution:
  
  
  Check Function Module Interface:
  
  Verify the interface of the function module in both the source and target systems. Ensure that the parameters match in terms of names, types, and order.
  If there have been recent changes to the function module, ensure that the calling program is updated accordingly.
  
  
  
  Verify RFC Destination:
  
  Check the configuration of the RFC destination in transaction SM59. Ensure that it points to the correct target system and that the connection is working.
  Test the connection to the target system to ensure it is active and reachable.
  
  
  
  Check for Function Module Availability:
  
  Ensure that the function module exists in the target system. You can do this by using transaction SE37 to search for the function module.
  If the function module is missing, you may need to transport it from the development system to the target system.
  
  
  
  Review Authorizations:
  
  Ensure that the user ID being used to call the function module has the necessary authorizations in the target system. You can check this in transaction SU53 after the error occurs.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the program that is calling the function module to see the exact parameters being passed and identify any discrepancies.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SE37: Function Module Maintenance
  SM59: RFC Destinations
  SU53: Authorization Check
  
  
  SAP Notes: Check for any relevant SAP Notes that may address known issues with the specific function module or error message.
  Documentation: Review the documentation for the function module to understand its expected parameters and usage.
  
  By following these steps, you should be able to identify and resolve the cause of the HREOP008 error message in SAP.