How To Fix WZ706 - No task exists with the specified number

SAP Error Message - Details

• Message type: E = Error

• Message class: WZ - Workflow: Model objects

• Message number: 706

• Message text: No task exists with the specified number

Self-Explanatory Message

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• What is the cause and solution for SAP error message WZ706 - No task exists with the specified number ?

  SAP Error Message:
  
  WZ706 - No task exists with the specified number
  
  Cause:
  This error occurs when the system tries to access or process a workflow task using a task number that does not exist in the workflow runtime environment. Essentially, the specified task number is invalid or has already been deleted/processed, so the system cannot find it.
  Common scenarios include:  
  
  The task number passed to a function module or workflow API is incorrect or outdated.  
  The task has already been completed or deleted, and the system is trying to access it again.  
  There is a mismatch or inconsistency in the workflow container or task handling logic.  
  The workflow runtime data is inconsistent or corrupted.
  
  
  Solution:
  
  
  Verify the Task Number:
  
  Check the task number being used in the workflow or program. Ensure it is correct and corresponds to an existing task in the workflow runtime.
  
  
  Check Workflow Logs:
  
  Use transaction SWI1 (Workflow Log) or SWI2_FREQ to find the workflow instance and verify the status of the task number. Confirm if the task exists or has been processed.
  
  
  Debug the Workflow or Program:
  
  If the error occurs during custom development or enhancement, debug the code to see where the task number is fetched or passed. Ensure the logic correctly handles task numbers and does not reuse or reference deleted tasks.
  
  
  Check for Workflow Runtime Issues:
  
  Sometimes, inconsistencies in the workflow runtime tables (e.g., SWTASK, SWWWIHEAD) can cause this error. Running workflow consistency checks or restarting the workflow runtime might help.
  
  
  Recreate or Restart Workflow:
  
  If the workflow instance is corrupted, consider restarting the workflow or recreating the task if possible.
  
  
  SAP Notes and Support:
  
  Search for relevant SAP Notes that might address known issues related to this error message. If the problem persists, consider raising a support ticket with SAP.
  
  
  
  Related Information:
  
  
  Transactions:  
  
  SWI1 - Workflow Log  
  SWI2_FREQ - Display Workflow Tasks (by user)  
  SWI6 - Workflow Administration  
  SWU3 - Workflow Customizing and Consistency Check
  
  
  
  Tables:  
  
  SWTASK - Workflow Tasks  
  SWWWIHEAD - Workflow Instances Header  
  SWWLOGHIST - Workflow Log History
  
  
  
  Function Modules:  
  
  SAP_WAPI_TASK_GET_DETAIL  
  SAP_WAPI_TASK_COMPLETE  
  These may throw WZ706 if the task number is invalid.
  
  
  
  
  Summary:
  WZ706 indicates that the workflow task number specified does not exist in the system. The main approach is to verify the task number, check workflow logs, debug the workflow or program logic, and ensure workflow runtime consistency. If necessary, restart or recreate the workflow instance or task.
  
  If you provide more context (e.g., when the error occurs, custom code involved), I can help with a more specific solution.