How To Fix WZ171 - This task is blocking other receiver types

WZ171 - Overview

• Message type: E = Error

• Message class: WZ - Workflow: Model objects

• Message number: 171

• Message text: This task is blocking other receiver types

What causes this issue?

The call of this task contains errors or was not successful and has
blocked the execution of other tasks.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WZ171 - This task is blocking other receiver types ?

  SAP Error Message:
  WZ171 - This task is blocking other receiver types
  
  
  Cause:
  The error message WZ171 occurs in SAP Workflow when a particular workflow task is configured in such a way that it blocks or prevents other receiver types from being processed or triggered. This typically happens when a task is set to be exclusive or when the workflow logic restricts parallel processing of multiple receiver types for the same task.
  In more detail:  
  
  The workflow task is assigned to a specific receiver type (e.g., a user, a position, or an organizational unit).  
  The task configuration or the workflow container settings cause the system to block other receiver types from receiving or processing the task simultaneously.  
  This can happen if the task is set as a "blocking" task or if the workflow is designed to wait for one receiver type to complete before others can proceed.
  
  
  When does it occur?
  
  When you