The indicator 'separate GR' cannot be deleted at the moment

What causes this issue?

You have deleted the indicator 'separate goods receipt'. This is not
possible for one of the following reasons:
In this control cycle there are kanbans with the status EMPTY, for which
goods receipt has already taken place.
In this control cycle there are kanbans with the stauts FULL, for which
goods receipt has not yet taken place.

System Response

The system has reset the indicator 'separate goods receipt'.

How to fix this error?

Set the kanbans with the status EMPTY for which goods receipt has
already taken place, to status FULL. These kanbans are characterized by
the indicator '+' in the kanban board.
Post the goods receipt for the kanbans with status FULL, for which the
goods receipt has not yet taken place. These kanbans are characterized
by the indicator '-' in the kanban board.
Then you can delete the indicator 'separate goods receipt' in the
control cycle.

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.