How To Fix WS_TOOL154 - Internal error in tree structure

SAP Error Message - Details

• Message type: E = Error

• Message class: WS_TOOL - Message Class for Web Services and Virtual Endpoints

• Message number: 154

• Message text: Internal error in tree structure

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 WS_TOOL154 - Internal error in tree structure ?

  The SAP error message WS_TOOL154: Internal error in tree structure typically occurs in the context of SAP Workflow or Business Workplace (SBWP) when there is a problem with the internal data structure representing the workflow or the tree of tasks/steps.
  
  Cause
  
  Corruption or inconsistency in the workflow container or task tree structure: The internal data structure that represents the workflow steps or the task tree is corrupted or inconsistent.
  Incomplete or incorrect workflow definition: The workflow might have missing or incorrect nodes, causing the system to fail when trying to build or display the tree.
  Issues in the SAP kernel or runtime environment: Sometimes, internal errors can be caused by bugs or inconsistencies in the SAP kernel or the workflow runtime.
  Transport or upgrade issues: If workflows were transported between systems or after an upgrade, some inconsistencies might have been introduced.
  Custom code or enhancements: Custom workflow steps or enhancements might cause the internal tree structure to be malformed.
  
  
  Solution
  
  
  Check Workflow Definitions:
  
  Use transaction SWDD (Workflow Builder) to open and validate the workflow.
  Look for incomplete or inconsistent nodes or steps.
  Activate the workflow again to ensure consistency.
  
  
  
  Rebuild or Reset Workflow Container:
  
  Sometimes, resetting or reinitializing the workflow container or context can help.
  Check the workflow container elements and ensure all required data is correctly passed.
  
  
  
  Check for SAP Notes:
  
  Search for SAP Notes related to WS_TOOL154.
  For example, SAP Note 0000000 (replace with actual note number if found) might provide patches or corrections.
  
  
  
  Debugging:
  
  If you have development access, debug the workflow runtime to identify where the tree structure fails.
  Use transaction SWUS or SWI1 to analyze workflow logs and errors.
  
  
  
  Kernel and System Updates:
  
  Ensure your SAP system kernel and workflow components are up to date.
  Apply any relevant Support Packages or Patches.
  
  
  
  Check Custom Code:
  
  Review any custom workflow steps or enhancements that might manipulate the workflow container or tree.
  Correct any coding errors or inconsistencies.
  
  
  
  Re-import or Re-transport Workflow:
  
  If the issue appeared after a transport, try re-importing the workflow objects.
  Verify transport logs for errors.
  
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SWDD - Workflow Builder
  SWI1 - Workflow Log
  SWUS - Workflow Runtime Analysis
  SBWP - Business Workplace
  
  
  
  SAP Notes and KBAs:
  
  Always check the SAP Support Portal for notes related to WS_TOOL154.
  Example search terms: "WS_TOOL154 Internal error in tree structure"
  
  
  
  SAP Workflow Documentation:
  
  Review SAP Help Portal documentation on workflow container and workflow runtime.
  
  
  
  
  If the problem persists after these steps, consider raising a support ticket with SAP, providing detailed workflow logs and system information.