How To Fix /TMF/TDS012 - RFC connection error. & & & &

SAP Error Message - Details

• Message type: E = Error

• Message class: /TMF/TDS -

• Message number: 012

• Message text: RFC connection error. & & & &

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 /TMF/TDS012 - RFC connection error. & & & & ?

  The SAP error message /TMF/TDS012 RFC connection error typically indicates an issue with the Remote Function Call (RFC) connection between SAP systems or between an SAP system and an external system. This error can arise due to various reasons, including network issues, configuration problems, or authorization issues.
  Causes:
  
  
  Network Issues: Problems with the network connection between the systems can lead to RFC connection errors. This could be due to firewalls, routing issues, or network outages.
  
  
  Configuration Errors: Incorrect configuration of the RFC destination in the SAP system can cause connection failures. This includes incorrect settings in transaction SM59.
  
  
  Authorization Issues: The user credentials used for the RFC connection may not have the necessary authorizations to access the target system.
  
  
  System Availability: The target system may be down or not reachable due to maintenance or other issues.
  
  
  SAP Gateway Issues: Problems with the SAP Gateway service on either the source or target system can lead to connection errors.
  
  
  Solutions:
  
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the systems. You can use tools like ping or traceroute to diagnose network issues.
  
  
  Verify RFC Destination:
  
  Go to transaction SM59 in the SAP GUI.
  Check the configuration of the RFC destination that is causing the error.
  Ensure that the connection type is correct (e.g., TCP/IP).
  Test the connection using the "Connection Test" button in SM59.
  
  
  
  Review Authorizations: Ensure that the user credentials used for the RFC connection have the necessary authorizations in both the source and target systems.
  
  
  Check System Status: Verify that the target system is up and running. You can check the system status in transaction SM51 or by logging into the target system.
  
  
  Review SAP Gateway Logs: Check the SAP Gateway logs for any errors or warnings that might indicate issues with the gateway service.
  
  
  Check Firewall Settings: If there are firewalls between the systems, ensure that the necessary ports for RFC communication are open.
  
  
  Consult SAP Notes: Look for relevant SAP Notes that might address specific issues related to the error message. You can search for notes in the SAP Support Portal.
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM59: RFC Destinations
  SM51: List of SAP Systems
  SMGW: SAP Gateway Monitor
  ST22: Dump Analysis (to check for any ABAP runtime errors)
  
  
  
  SAP Documentation: Refer to the official SAP documentation for more detailed information on RFC connections and troubleshooting.
  
  
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.