How To Fix CNV_10020786 - Internal RFC call of function module &1, destination &2 failed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 786

• Message text: Internal RFC call of function module &1, destination &2 failed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020786 - Internal RFC call of function module &1, destination &2 failed ?

  The SAP error message CNV_10020786 indicates that there was a failure during an internal RFC (Remote Function Call) to a function module. This error typically occurs in the context of data migration or conversion processes, often related to the SAP S/4HANA migration or other data transfer activities.
  Causes:
  
  Network Issues: There may be network connectivity problems between the systems involved in the RFC call.
  Destination Configuration: The RFC destination might not be correctly configured in the SAP system. This includes issues with the connection parameters or the target system being down.
  Authorization Issues: The user executing the RFC call may not have the necessary authorizations to access the function module or the target system.
  Function Module Errors: The function module being called may have its own issues, such as missing parameters, incorrect logic, or runtime errors.
  System Performance: High load on the system or resource constraints may lead to timeouts or failures in processing the RFC call.
  
  Solutions:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 and verify the configuration of the RFC destination. Ensure that the connection parameters are correct and that the target system is reachable.
  Test the connection from the SAP GUI to ensure it is working properly.
  
  
  
  Review Authorizations:
  
  Ensure that the user executing the RFC call has the necessary authorizations to access the function module and the target system.
  
  
  
  Check Network Connectivity:
  
  Use tools like ping or traceroute to check the network connectivity between the systems involved in the RFC call.
  
  
  
  Analyze Function Module:
  
  If you have access to the function module, check its implementation for any potential issues. Look for missing parameters or logic errors that could cause it to fail.
  
  
  
  Monitor System Performance:
  
  Check system performance metrics to see if there are any resource constraints. If the system is under heavy load, consider scheduling the data migration during off-peak hours.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the application logs (transaction SLG1) for any additional error messages or warnings that could provide more context about the failure.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide guidance on similar issues.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  SM59: RFC Destinations
  SM21: System Log
  SLG1: Application Log
  
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance, providing them with detailed information about the error and the context in which it occurred.
  
  By following these steps, you should be able to diagnose and resolve the CNV_10020786 error effectively.