How To Fix TN794 - Reading SP stack information for the target system &1 (&2)

SAP Error Message - Details

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 794

• Message text: Reading SP stack information for the target system &1 (&2)

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 TN794 - Reading SP stack information for the target system &1 (&2) ?

  The SAP error message TN794 indicates an issue related to reading the Support Package (SP) stack information for a target system. This error typically arises during the process of managing or applying Support Packages or during system upgrades.
  Cause:
  The error can be caused by several factors, including:
  
  Network Issues: There may be connectivity problems between the system where the operation is being performed and the target system.
  Authorization Issues: The user executing the operation may not have the necessary authorizations to read the SP stack information from the target system.
  Configuration Issues: The target system may not be properly configured in the SAP Landscape Management (LaMa) or in the transport management system (TMS).
  System State: The target system might be in a state that prevents reading the SP stack information, such as being down or in maintenance mode.
  Incorrect Target System: The target system specified may not exist or may not be correctly defined in the system landscape.
  
  Solution:
  To resolve the TN794 error, you can follow these steps:
  
  
  Check Connectivity: Ensure that there is proper network connectivity between the source and target systems. You can use tools like ping or telnet to verify connectivity.
  
  
  Verify Authorizations: Make sure that the user executing the operation has the necessary authorizations to access the target system. This may involve checking roles and permissions in the SAP system.
  
  
  Check Configuration: Review the configuration of the target system in the SAP Landscape Management or TMS. Ensure that the target system is correctly defined and that all necessary parameters are set.
  
  
  System Status: Check the status of the target system. Ensure that it is up and running and not in a maintenance mode or down for any reason.
  
  
  Review Logs: Look at the system logs (transaction SM21) and the developer traces (transaction ST22) for any additional error messages that might provide more context about the issue.
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that might address this specific error. There may be patches or updates that resolve known issues.
  
  
  Restart the Process: Sometimes, simply restarting the process or the transaction can resolve transient issues.
  
  
  Related Information:
  
  SAP Support Portal: For further assistance, you can access the SAP Support Portal and search for the error message or related issues.
  SAP Community: Engaging with the SAP Community can provide insights from other users who may have encountered similar issues.
  Documentation: Review the official SAP documentation regarding Support Package Manager (SPAM) and Software Update Manager (SUM) for best practices and troubleshooting steps.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for more in-depth assistance.