How To Fix WL385 - Workflow & no. & step &: Expression '&' is not a valid task number

SAP Error Message - Details

• Message type: E = Error

• Message class: WL - Workflow: run-time messages

• Message number: 385

• Message text: Workflow & no. & step &: Expression '&' is not a valid task number

What causes this issue?

The task for the step &V3& in the workflow definition was to be
determined dynamically from the expression &V4&. However, this
expression does not contain a valid task number.

System Response

The workflow was suspended in error status.

How to fix this error?

Correct the incorrect workflow definition or workflow data and then
resume the suspended workflow execution.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WL385 - Workflow & no. & step &: Expression '&' is not a valid task number ?

  The SAP error message WL385 indicates that there is an issue with a workflow task number in the specified workflow step. This error typically arises when the workflow is trying to reference a task that does not exist or is not valid in the context of the workflow.
  Cause:
  
  Invalid Task Number: The task number referenced in the workflow is either incorrect or does not exist in the system.
  Deleted or Inactive Task: The task may have been deleted or marked as inactive, making it unavailable for the workflow.
  Configuration Issues: There may be configuration issues in the workflow definition or the task itself.
  Transport Issues: If the workflow was transported from one system to another, the task might not have been transported correctly.
  
  Solution:
  
  Check Task Number: Verify the task number referenced in the error message. Ensure that it is correct and exists in the system.
  Review Workflow Definition: Open the workflow definition in the SAP Workflow Builder (transaction code SWDD) and check the step that is causing the error. Ensure that the task number is correctly assigned.
  Check Task Status: Use transaction code PFTC (Task Maintenance) to check the status of the task. Ensure that it is active and not deleted.
  Recreate Task: If the task is missing or has been deleted, you may need to recreate it or restore it from a backup if available.
  Transport Check: If the workflow was transported, ensure that all related objects, including tasks, were transported correctly. You may need to re-transport the task or check the transport logs for errors.
  Debugging: If the issue persists, consider debugging the workflow to identify where the invalid task number is being referenced.
  
  Related Information:
  
  Transaction Codes:
  
  SWDD: Workflow Builder
  PFTC: Task Maintenance
  SWI1: Work Item Selection
  
  
  Documentation: Refer to SAP Help documentation for workflows and task management for more detailed guidance on configuring and troubleshooting workflows.
  SAP Notes: Check for any relevant SAP Notes that may address known issues related to this error message.
  
  By following these steps, you should be able to identify and resolve the issue causing the WL385 error in your SAP workflow.