Status of pegged nomination &1 &2 partially complete. No automatic change

What causes this issue?

The status of the pegged nomination line item is 'partially complete',
which means automatic updates are not possible.

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

System Response

Dependent entries of pegged nomination line items are not updated
automatically.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.