How To Fix WRF_APC168 - Check RFC destination &1 / remote user, logon failed

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_APC - Messages for Operational Assortment Planning and Control

• Message number: 168

• Message text: Check RFC destination &1 / remote user, logon failed

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 WRF_APC168 - Check RFC destination &1 / remote user, logon failed ?

  The SAP error message:
  WRF_APC168 Check RFC destination &1 / remote user, logon failed
  typically occurs when there is a problem with the Remote Function Call (RFC) connection from one SAP system to another or to an external system. The message indicates that the logon attempt to the remote system via the specified RFC destination failed due to incorrect or missing user credentials or connection parameters.
  
  Cause
  
  Incorrect RFC destination configuration: The RFC destination &1 (the placeholder &1 is replaced by the actual RFC destination name in the message) is not correctly set up.
  Invalid or expired user credentials: The remote user specified in the RFC destination does not exist, the password is incorrect, or the user is locked/expired.
  Authorization issues: The remote user does not have the required authorizations to log on or execute the requested function.
  Network or connectivity issues: The remote system is unreachable due to network problems or the SAP gateway is down.
  Incorrect logon parameters: The logon language, client, or system number might be wrong in the RFC destination.
  Password changes: The password for the remote user was changed but not updated in the RFC destination.
  
  
  Solution
  
  
  Check RFC Destination Configuration:
  
  Go to transaction SM59 in the SAP system.
  Locate the RFC destination &1 (replace &1 with the actual destination name).
  Test the connection using the Test Connection and Test Authorization buttons.
  Verify the target host, system number, client, and user details.
  
  
  
  Verify User Credentials:
  
  Check the user specified in the RFC destination.
  Ensure the user exists in the remote system (use SU01 in the remote system).
  Verify the password is correct and update it if necessary.
  Check if the user is locked or expired and unlock/reactivate if needed.
  
  
  
  Check Authorizations:
  
  Ensure the remote user has the necessary authorizations to log on and execute the required functions.
  Review roles and profiles assigned to the user.
  
  
  
  Network and System Availability:
  
  Verify network connectivity between the systems.
  Check if the remote SAP system and its gateway are up and running.
  Use ping or telnet to test network access to the remote host and port.
  
  
  
  Update Password in RFC Destination:
  
  If the password was changed recently, update it in the RFC destination configuration.
  
  
  
  Check Logs for More Details:
  
  Review system logs (SM21), developer traces (ST11), or gateway logs for more detailed error messages.
  
  
  
  
  Related Information
  
  Transaction SM59: Used to maintain and test RFC destinations.
  Transaction SU01: Used to maintain user master records.
  Transaction SM21: System log for error analysis.
  SAP Note 0000000: (Check SAP Notes for specific system versions and patches related to RFC issues.)
  RFC Types: Ensure the correct RFC type is used (e.g., TCP/IP connection, ABAP connection).
  SAP Gateway: The gateway must be running on the remote system for RFC communication.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  WRF_APC168 Check RFC destination &1 / remote user, logon failed
  
  
  Cause
  Incorrect RFC destination, invalid user credentials, locked user, network issues
  
  
  Solution
  Check and correct RFC destination in SM59, verify user in SU01, update password, test connection
  
  
  Tools to Use
  SM59, SU01, SM21, ST11, network tools (ping, telnet)
  
  
  Additional Notes
  Ensure remote system is reachable and SAP gateway is running
  
  
  
  
  If you provide the actual RFC destination name or more context, I can help you with more specific troubleshooting steps.