How To Fix UCS0019 - Task hierarchy is inconsistent; tasks used more than once

UCS0019 - Overview

• Message type: E = Error

• Message class: UCS0 - Messages for Status Management

• Message number: 019

• Message text: Task hierarchy is inconsistent; tasks used more than once

What causes this issue?

Tasks or task groups are being used more than once in the current task
hierarchy.
This inconsistency needs to be cleaned up before continuing.

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?

Examine the current task hierarchy in the consolidation workbench, and
delete any multiple occurrences of tasks or task groups.

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 UCS0019 - Task hierarchy is inconsistent; tasks used more than once ?

  The SAP error message UCS0019 indicates that there is an inconsistency in the task hierarchy within the system. Specifically, it means that one or more tasks are being used more than once in the hierarchy, which is not allowed. This can occur in various contexts, such as when configuring workflows, task management, or project management within SAP.
  
  Cause:
  
  Duplicate Task Assignment: A task has been assigned to multiple parent tasks or is referenced in multiple places within the hierarchy.
  Incorrect Configuration: The task hierarchy may have been incorrectly configured, leading to overlapping or duplicate entries.
  Data Migration Issues: If data has been migrated from another system or from a previous version of SAP, it may have introduced inconsistencies.
  
  
  Solution:
  
  Review Task Hierarchy: Check the task hierarchy to identify where the duplicate tasks are being referenced. You can do this by navigating to the relevant configuration area in SAP where tasks are defined.
  Remove Duplicates: Once you identify