Product allocation procedure and step are unknown

What causes this issue?

Product allocations procedure &v2& and the product allocations step
could no longer be determined for the chosen characteristics
combination in product allocation group &v1&.
This problem can occur if Customizing settings for product allocations
were changed after the check.
The following changes can cause this problem:
The <DS:DE./SAPAPO/KONOB>product allocations object</> of the
characteristics combination is no longer used for controlling the
allocation of products for product allocations procedure &v2&.
The product allocations step can be determined via product allocation
group &v1&.
<DS:DE./SAPAPO/KOSCH>Product allocations procedure</> &v2& is no longer
used in the <DS:DE./SAPAPO/KOSCH_GRP>product allocation procedure
sequence</> for the product from the order item.
<DS:DE./SAPAPO/KCGRP>Product allocation group</> &v1& is no longer used
in any of the product allocations steps for product allocations
procedure &v2& or in the product allocation procedure sequence.

System Response

The product allocation situation (in the product allocations procedure)
cannot be displayed.
The contents of product allocation group for the chosen characteristics
combination is displayed (without taking the product allocations
procedure into account).

How to fix this error?

If the changes to the Customizing settings for product allocations are
correct, further corrections are not required.
Otherwise, you should change the Customizing settings back to their
former status.

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.