How To Fix UCS0031 - Blocking not possible: Task &1 has the status "&2" for &3

UCS0031 - Overview

• Message type: E = Error

• Message class: UCS0 - Messages for Status Management

• Message number: 031

• Message text: Blocking not possible: Task &1 has the status "&2" for &3

What causes this issue?

Task &V1& currently has the status &V2& for &V3&. Thus, the task &V1&
either cannot be blocked or no longer needs to be blocked, or blocking
is no longer supported.

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?

Block tasks only when they in a blockable state. Tasks that do not
require manual interaction (that is, tasks other than data entry and
manual posting) are in a blockable state when their status is "Without
Errors," "Without Errors but with Warnings," "Unblocked," or "Pending
Completion of Preceding Task."
Manual tasks are the exception because these are blockable regardless of
the current task status.
Furthermore, all tasks that precede a given task must be blocked before
the given task itself can be blocked. This applies to all task
categories.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UCS0031 - Blocking not possible: Task &1 has the status "&2" for &3 ?

  The SAP error message UCS0031 indicates that a task cannot be blocked because it is in a status that does not allow blocking. The message typically includes the task number (&1), the current status of the task (&2), and possibly the user or system that is associated with the task (&3).
  
  Cause:
  The error occurs when you attempt to block a task that is not in a suitable status for blocking. Common statuses that might prevent blocking include:
  
  In Progress: The task is currently being worked on.
  Completed: The task has already been finished.
  Cancelled: The task has been cancelled and cannot be blocked.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Task Status: Review the status of the task indicated in the error message. You can do this by navigating to the relevant transaction or report that displays task details.
  
  
  Change Task Status: If the task is in a status that does not allow