How To Fix UAS004 - Unknown RFC destination &1

SAP Error Message - Details

• Message type: E = Error

• Message class: UAS -

• Message number: 004

• Message text: Unknown RFC destination &1

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message UAS004 - Unknown RFC destination &1 ?

  The SAP error message UAS004 "Unknown RFC destination &1" typically indicates that the system is trying to access a Remote Function Call (RFC) destination that is not defined or recognized in the SAP system. This can occur in various scenarios, such as when trying to connect to another SAP system or an external system.
  Cause:
  
  Missing RFC Destination: The specified RFC destination does not exist in the system.
  Incorrect Configuration: The RFC destination may be incorrectly configured or misspelled.
  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 destination.
  Transport Layer Issues: If the RFC destination is part of a transport layer, it may not have been transported correctly.
  
  Solution:
  
  
  Check RFC Destination:
  
  Go to transaction code SM59 (RFC Destinations).
  Look for the specified RFC destination (replace &1 with the actual name).
  If it does not exist, you will need to create it.
  
  
  
  Create or Modify RFC Destination:
  
  If the destination is missing, create a new RFC destination by clicking on "Create" and filling in the necessary details (e.g., target host, system number, client, user, password).
  If it exists but is misconfigured, modify the existing entry to ensure all details are correct.
  
  
  
  Test the RFC Connection:
  
  After creating or modifying the RFC destination, use the "Test Connection" feature in SM59 to ensure that the connection is working properly.
  
  
  
  Check Authorizations:
  
  Ensure that the user executing the transaction has the necessary authorizations to access the RFC destination.
  
  
  
  Network Configuration:
  
  Verify that there are no network issues preventing access to the target system. This may involve checking firewalls, VPNs, or other network configurations.
  
  
  
  Consult Documentation:
  
  If the RFC destination is part of a specific application or module, consult the relevant SAP documentation for any additional configuration steps that may be required.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: Manage RFC Destinations
  SU53: Check Authorization Issues
  ST22: Dump Analysis (if applicable)
  
  
  
  SAP Notes: Check SAP Notes related to RFC issues for any known bugs or additional troubleshooting steps.
  
  
  Logs: Review system logs (transaction SLG1) for any additional error messages that may provide more context.
  
  
  By following these steps, you should be able to resolve the UAS004 error and successfully connect to the desired RFC destination.