How To Fix UCC2007 - Error while calling up RFC

SAP Error Message - Details

• Message type: E = Error

• Message class: UCC2 -

• Message number: 007

• Message text: Error while calling up RFC

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UCC2007 - Error while calling up RFC ?

  The SAP error message UCC2007, which indicates "Error while calling up RFC," typically occurs when there is an issue with Remote Function Call (RFC) communication between systems. This can happen in various scenarios, such as when trying to call a function module in a different SAP system or when there are issues with the configuration of the RFC destination.
  Causes of UCC2007 Error
  
  Network Issues: There may be network connectivity problems between the systems involved in the RFC call.
  RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system. This includes incorrect settings for the target system, such as the system ID, client number, user credentials, or connection type.
  Authorization Issues: The user credentials used for the RFC call may not have the necessary authorizations to execute the function module.
  Function Module Issues: The function module being called may not exist, may be inactive, or may have been changed in a way that affects its execution.
  System Performance: High load on the SAP system or the target system can lead to timeouts or failures in the RFC call.
  Transport Layer Issues: If the RFC call involves a transport layer, issues with the transport configuration can also lead to this error.
  
  Solutions to UCC2007 Error
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination being used. Ensure that the connection type, target system, and user credentials are correct.
  Test the connection using the "Connection Test" button in the RFC destination configuration.
  
  
  Check Authorizations: Ensure that the user credentials used for the RFC call have the necessary authorizations to execute the function module. You can check this in transaction SU53 after the error occurs.
  Validate Function Module: Ensure that the function module being called exists and is active. You can check this in transaction SE37 or SE80.
  Monitor System Performance: Check the performance of both the calling and target systems. Use transaction SM50 or SM66 to monitor system load and performance.
  Review Logs: Check the system logs for any additional error messages or information that can provide more context about the failure. You can use transaction SM21 for system logs and ST22 for dump analysis.
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to the UCC2007 error.
  
  Related Information
  
  
  Transaction Codes:
  
  SM59: RFC Destination Configuration
  SU53: Authorization Check
  SE37: Function Module Maintenance
  SM21: System Log
  ST22: Dump Analysis
  SM50/SM66: Process Overview
  
  
  
  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 steps you have already taken.
  
  
  By following these steps, you should be able to diagnose and resolve the UCC2007 error effectively.