Replenishment object &1 could not be fully assigned

What causes this issue?

Object &V1& could not be fully assigned.

System Response

Processing continues, however the object is not considered during cost
distribution.

How to fix this error?

In transaction <ZH>PEG06</>, check whether a higher level production
order exists with a goods receipt quantity of zero and an active final
delivery indicator.
Other possible causes may be program error or a process that is not
supported.

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.