How To Fix TB403 - Error in remote system &

SAP Error Message - Details

• Message type: E = Error

• Message class: TB - SM31 table maintenance messages

• Message number: 403

• Message text: Error in remote 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.

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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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message TB403 - Error in remote system & ?

  The SAP error message TB403 typically indicates that there is an issue with a remote system connection. This error can occur in various contexts, such as during data transfer, remote function calls (RFC), or when accessing remote systems in a distributed environment.
  Cause:
  The TB403 error can be caused by several factors, including:
  
  
  Network Issues: Problems with the network connection between the SAP system and the remote system can lead to this error. This could be due to firewalls, routing issues, or network outages.
  
  
  Configuration Errors: Incorrect configuration settings in the RFC destination or in the remote system can cause connection failures. This includes incorrect user credentials, incorrect system IDs, or wrong connection parameters.
  
  
  Remote System Availability: The remote system may be down or not reachable due to maintenance or other issues.
  
  
  Authorization Issues: The user credentials used for the connection may not have the necessary authorizations to access the remote system.
  
  
  Version Compatibility: Incompatibility between different versions of SAP systems can also lead to communication issues.
  
  
  Solution:
  To resolve the TB403 error, you can follow these steps:
  
  
  Check Network Connectivity:
  
  Ensure that the network connection between the SAP system and the remote system is stable and functioning. You can use tools like ping or traceroute to test connectivity.
  
  
  
  Verify RFC Destination:
  
  Go to transaction code SM59 in the SAP GUI and check the configuration of the RFC destination. Ensure that the connection parameters (such as the target host, system number, and client) are correct.
  Test the connection from SM59 to see if it is successful.
  
  
  
  Check Remote System Status:
  
  Ensure that the remote system is up and running. If it is down for maintenance, you may need to wait until it is back online.
  
  
  
  Review User Credentials:
  
  Verify that the user credentials used for the connection are correct and that the user has the necessary authorizations to access the remote system.
  
  
  
  Check for System Logs:
  
  Review the system logs (transaction SM21) for any additional error messages that may provide more context about the issue.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address the TB403 error or provide additional troubleshooting steps.
  
  
  
  Contact Support:
  
  If the issue persists after performing the above checks, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59: RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  SICF: HTTP Services
  
  
  
  Documentation: Refer to SAP Help documentation for more details on RFC connections and troubleshooting.
  
  
  By following these steps, you should be able to identify and resolve the TB403 error in your SAP environment.