How To Fix WTY799 - Error when loading navigation tree

SAP Error Message - Details

• Message type: E = Error

• Message class: WTY - Warranty processing

• Message number: 799

• Message text: Error when loading navigation tree

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 WTY799 - Error when loading navigation tree ?

  SAP Error Message:
  
  WTY799 - Error when loading navigation tree
  
  Cause:
  The error WTY799 typically occurs when there is a problem loading the navigation tree in SAP Web Dynpro applications or SAP GUI components that use the navigation tree control. Common causes include:
  
  Corrupted or inconsistent navigation tree data in the backend.
  Authorization issues preventing the user from accessing certain nodes or data.
  Missing or incorrect configuration in the navigation tree setup.
  Backend system inconsistencies or transport issues affecting the navigation tree metadata.
  Cache or buffer problems causing outdated or invalid navigation tree data to be loaded.
  Network or communication issues between frontend and backend.
  
  
  Solution:
  To resolve the WTY799 error, consider the following steps:
  
  
  Check User Authorizations:
  
  Verify that the user has the necessary authorizations to access the nodes in the navigation tree.
  Use transaction SU53 after the error occurs to check for missing authorizations.
  
  
  
  Clear Cache and Buffers:
  
  Clear the SAP GUI cache or Web Dynpro cache.
  Use transaction /IWFND/CACHE_CLEANUP (for SAP Gateway) or clear the frontend cache.
  Restart the SAP GUI or Web Dynpro application.
  
  
  
  Check Navigation Tree Configuration:
  
  Review the configuration of the navigation tree in the customizing or development environment.
  Ensure that all nodes and their associated data sources are correctly defined.
  
  
  
  Check Backend Consistency:
  
  Run consistency checks on the relevant backend tables or objects related to the navigation tree.
  Check for transport or update errors that might have corrupted the navigation tree data.
  
  
  
  Review Logs and Traces:
  
  Check the system logs (transaction SM21) and developer traces (transaction ST22 for dumps, SM12 for locks) for related errors.
  Analyze Web Dynpro traces if applicable.
  
  
  
  Apply SAP Notes:
  
  Search for SAP Notes related to WTY799 on the SAP Support Portal.
  Apply any relevant patches or corrections.
  
  
  
  Rebuild or Regenerate Navigation Tree:
  
  In some cases, regenerating or rebuilding the navigation tree metadata or cache can help.
  This might involve running specific reports or programs provided by SAP.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SU53 – Authorization check
  SM21 – System log
  ST22 – Dump analysis
  SM12 – Lock entries
  /IWFND/CACHE_CLEANUP – SAP Gateway cache cleanup
  
  
  
  SAP Notes:
  
  Check SAP Notes by searching for "WTY799" or "Error loading navigation tree".
  Example notes might address specific bugs or provide instructions for regeneration.
  
  
  
  SAP Forums and Community:
  
  SAP Community forums often have discussions on WTY799.
  Useful to check if others have encountered similar issues in your SAP version.
  
  
  
  
  If the problem persists after these steps, consider raising a support ticket with SAP, providing detailed logs and system information.