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

SAP Error Message - Details

• 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.