How To Fix XT645 - Target system &1 invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: XT - Transport Management System

• Message number: 645

• Message text: Target system &1 invalid

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message XT645 - Target system &1 invalid ?

  The SAP error message XT645 "Target system &1 invalid" typically occurs in scenarios involving system connections, such as when using the Transport Management System (TMS) or when trying to execute remote function calls (RFC) to a target system that is not recognized or is incorrectly configured.
  Cause:
  
  Incorrect Target System Configuration: The target system may not be properly defined in the Transport Management System (TMS) or in the RFC destination settings.
  Missing System in TMS: The target system may not be included in the TMS configuration.
  Network Issues: There may be network connectivity issues preventing the source system from reaching the target system.
  Authorization Issues: The user may not have the necessary authorizations to access the target system.
  System Status: The target system may be down or not available.
  
  Solution:
  
  
  Check TMS Configuration:
  
  Go to the TMS configuration (transaction code STMS).
  Ensure that the target system is correctly defined and is part of the transport domain.
  If the system is missing, you may need to add it to the TMS configuration.
  
  
  
  Verify RFC Destinations:
  
  Use transaction code SM59 to check the RFC destinations.
  Ensure that the target system is listed and that the connection settings (such as the target host, system number, and client) are correct.
  Test the connection to ensure it is working.
  
  
  
  Check System Status:
  
  Ensure that the target system is up and running.
  Check for any system downtime or maintenance activities that might affect connectivity.
  
  
  
  Review Authorizations:
  
  Ensure that the user executing the action has the necessary authorizations to access the target system.
  
  
  
  Network Configuration:
  
  Check for any network issues that might be preventing communication between the systems.
  Ensure that firewalls or network policies are not blocking the connection.
  
  
  
  Consult Logs:
  
  Check the system logs (transaction code SM21) for any additional error messages that might provide more context about the issue.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to this error message.
  Documentation: Review SAP documentation on TMS and RFC configuration for best practices and troubleshooting steps.
  Community Forums: Consider checking SAP Community forums for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify and resolve the cause of the XT645 error message in your SAP environment.