Total qty of assignments is not equal to target quantity

What causes this issue?

The sum of the replenishment element material quantities assigned to
the individual WBS elements is not equal to the total quantity for the
replenishment element.

System Response

The assignments cannot be saved.

How to fix this error?

Coorect the assigned quantities <DS:TRAN.PEG02>manually</>.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.