How To Fix GW638 - Failed to start remote TP

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 638

• Message text: Failed to start remote TP

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 GW638 - Failed to start remote TP ?

  The SAP error message GW638: Failed to start remote TP typically indicates an issue with the communication between the SAP system and a remote transaction processor (TP). This error can occur in various scenarios, such as when trying to execute a remote function call (RFC) or when there are issues with the gateway or network configuration.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP system and the remote system can lead to this error.
  Gateway Configuration: Incorrect configuration of the SAP Gateway can prevent the remote TP from starting.
  Authorization Issues: The user or system may not have the necessary authorizations to start the remote TP.
  Remote System Down: The remote system may be down or not reachable.
  Incorrect RFC Destination: The RFC destination may be incorrectly configured or pointing to the wrong system.
  Firewall Restrictions: Firewalls may be blocking the necessary ports for communication.
  
  Solutions:
  
  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 diagnose connectivity issues.
  Verify Gateway Configuration: Check the configuration of the SAP Gateway (transaction SMGW) to ensure it is set up correctly. Look for any errors or warnings in the gateway logs.
  Review Authorizations: Ensure that the user or system has the necessary authorizations to execute the remote transaction. Check the roles and profiles assigned to the user.
  Check Remote System Status: Verify that the remote system is up and running. You can try to log in to the remote system to confirm its availability.
  Validate RFC Destination: Go to transaction SM59 and check the configuration of the RFC destination. Ensure that it points to the correct system and that the connection type is appropriate.
  Firewall Configuration: If applicable, check the firewall settings to ensure that the necessary ports for SAP communication (e.g., port 3200 for the SAP Gateway) are open and not blocked.
  
  Related Information:
  
  Transaction Codes:
  
  SMGW: Gateway Monitor
  SM59: RFC Destinations
  SM21: System Log
  ST22: Dump Analysis
  
  
  SAP Notes: Check for relevant SAP Notes that may address specific issues related to the GW638 error. You can search the SAP Support Portal for notes related to this error message.
  Logs: Review the gateway logs and system logs for any additional error messages or warnings that may provide more context about the issue.
  
  If the problem persists after checking these areas, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.