How To Fix T2558 - RFC Back-up link & OK

SAP Error Message - Details

• Message type: E = Error

• Message class: T2 - General Treasury

• Message number: 558

• Message text: RFC Back-up link & OK

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message T2558 - RFC Back-up link & OK ?

  The SAP error message T2558, which refers to "RFC Back-up link & OK," typically indicates an issue related to Remote Function Call (RFC) connections in the SAP system. This error can occur in various scenarios, such as when there are problems with the RFC destination configuration, network issues, or when the system is unable to establish a connection to the specified RFC destination.
  Cause:
  
  RFC Destination Configuration: The RFC destination may not be configured correctly in the SAP system. This includes incorrect parameters such as the target system, user credentials, or connection type.
  Network Issues: There may be network connectivity problems between the SAP system and the target system, preventing successful communication.
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to perform the requested operation.
  System Availability: The target system may be down or not reachable due to maintenance or other issues.
  
  Solution:
  
  
  Check RFC Destination:
  
  Go to transaction code SM59 in the SAP GUI.
  Locate the relevant RFC destination and check its configuration.
  Ensure that the connection type, target host, and system number are correct.
  Test the connection using the "Connection Test" button to verify if it can connect successfully.
  
  
  
  Network Connectivity:
  
  Ensure that there are no network issues preventing communication between the systems.
  Check firewall settings, VPN connections, or any other network configurations that might block the connection.
  
  
  
  User Authorization:
  
  Verify that the user credentials used for the RFC connection have the necessary authorizations.
  Check the user roles and profiles to ensure they have access to the required transactions and functions.
  
  
  
  System Status:
  
  Check if the target system is up and running. If it is down, coordinate with the system administrators to resolve the issue.
  
  
  
  Review Logs:
  
  Check the system logs (transaction SM21) and the RFC trace (transaction SM58) for any additional error messages or details that can provide more context about the issue.
  
  
  
  Consult Documentation:
  
  Refer to SAP Notes or documentation related to RFC connections for any specific guidance or known issues.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SM59: Manage RFC Destinations
  SM21: System Log
  SM58: Asynchronous RFC Monitor
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to RFC connections.
  SAP Community: Engage with the SAP Community forums for discussions and solutions shared by other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to involve your SAP Basis team or consult SAP support for further assistance.