How To Fix UPC542 - Choose an RFC destination

SAP Error Message - Details

• Message type: E = Error

• Message class: UPC - Planning: General Error Messages

• Message number: 542

• Message text: Choose an RFC destination

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message UPC542 - Choose an RFC destination ?

  The SAP error message UPC542, which states "Choose an RFC destination," typically occurs when a user attempts to execute a function that requires a Remote Function Call (RFC) destination, but no valid RFC destination has been specified or selected.
  Cause:
  
  Missing RFC Destination: The most common cause is that the RFC destination required for the operation is not defined in the system.
  Incorrect Configuration: The RFC destination may be incorrectly configured or not accessible due to network issues or authorization problems.
  User Authorization: The user may not have the necessary authorizations to access the specified RFC destination.
  System Configuration: The system may not be properly configured to connect to the required external system.
  
  Solution:
  
  
  Define RFC Destination:
  
  Go to transaction code SM59 (RFC Destinations).
  Check if the required RFC destination is defined. If not, create a new RFC destination by clicking on "Create" and filling in the necessary details (e.g., target host, system number, client, user credentials).
  
  
  
  Check Configuration:
  
  Ensure that the RFC destination is configured correctly. Verify the connection parameters, such as the target system's IP address, port, and any required logon credentials.
  Test the connection using the "Connection Test" option in SM59 to ensure that the destination is reachable.
  
  
  
  User Authorizations:
  
  Ensure that the user has the necessary authorizations to access the RFC destination. This may involve checking roles and profiles assigned to the user in transaction PFCG.
  
  
  
  Network Issues:
  
  Check for any network issues that may be preventing the connection to the RFC destination. This may involve checking firewalls, VPNs, or other network configurations.
  
  
  
  Review Logs:
  
  If the issue persists, review the system logs (transaction SM21) and the RFC trace (transaction SM58) for any additional error messages that may provide more context about the failure.
  
  
  
  Related Information:
  
  RFC Destinations: These are configurations in SAP that allow communication between different SAP systems or between SAP and non-SAP systems.
  Transaction Codes:
  
  SM59: Manage RFC destinations.
  PFCG: Role maintenance for user authorizations.
  SM21: System log for monitoring errors and messages.
  SM58: Monitor asynchronous RFC calls.
  
  
  Documentation: Refer to SAP Help Portal or SAP Notes for specific guidance on RFC configuration and troubleshooting.
  
  By following these steps, you should be able to resolve the UPC542 error and successfully choose an RFC destination for your operation.