How To Fix S#437 - Only specify valid RFC destinations or variables as target system

SAP Error Message - Details

• Message type: E = Error

• Message class: S# -

• Message number: 437

• Message text: Only specify valid RFC destinations or variables as target system

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message S#437 - Only specify valid RFC destinations or variables as target system ?

  The SAP error message S#437, which states "Only specify valid RFC destinations or variables as target system," typically occurs when there is an issue with the Remote Function Call (RFC) destination specified in your SAP system. This error can arise in various scenarios, such as when trying to execute a remote function module or when configuring a connection to another SAP system or external system.
  Causes:
  
  Invalid RFC Destination: The specified RFC destination does not exist or is incorrectly configured in the SAP system.
  Typographical Errors: There may be a typo in the name of the RFC destination.
  Authorization Issues: The user may not have the necessary authorizations to access the specified RFC destination.
  Network Issues: There may be network connectivity issues preventing access to the target system.
  Configuration Issues: The RFC destination may not be properly set up in transaction SM59.
  
  Solutions:
  
  
  Check RFC Destination:
  
  Go to transaction SM59 and verify that the RFC destination you are trying to use exists and is correctly configured.
  Ensure that the destination is of the correct type (e.g., TCP/IP, ABAP Connection) and that all required parameters are filled in.
  
  
  
  Test the Connection:
  
  In SM59, select the RFC destination and use the "Connection Test" option to check if the connection is working properly. This will help identify if there are any connectivity issues.
  
  
  
  Check for Typos:
  
  Double-check the name of the RFC destination in your code or configuration to ensure there are no typographical errors.
  
  
  
  Review Authorizations:
  
  Ensure that the user executing the function has the necessary authorizations to access the specified RFC destination. You may need to check user roles and profiles.
  
  
  
  Check Network Configuration:
  
  If the RFC destination points to an external system, ensure that there are no firewall or network issues preventing access.
  
  
  
  Consult Documentation:
  
  If you are using a specific function module or transaction that requires an RFC destination, consult the relevant SAP documentation for any additional requirements or configurations.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: Manage RFC destinations.
  SU01: User maintenance (to check user authorizations).
  ST22: Dump analysis (to check for any related dumps).
  
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address specific issues related to RFC destinations.
  
  
  Logs: Review system logs in transaction SM21 for any related error messages that could provide more context about the issue.
  
  
  By following these steps, you should be able to identify and resolve the cause of the S#437 error in your SAP system.