Category & and delivery class & for table & contradict each other

What causes this issue?

You have tried to assign a customizing object to category &V1&. The
component list of the object contains table &V3&, that belongs to
delivery class &V2&.
The object category &V1& and the table delivery class &V2& do not
correspond to each other.

System Response

The enntry is only accepted in connection with a warning.

How to fix this error?

Change the object category or table delivery class according to the
possible assignments in the following table:
CUST is only for client-specific tables and is allowed only for
delivery classes C, G, E, L or A.
CUSY is only allowed for tables belonging to delivery classes C, G, E,
L, A and S.
SYST is only allowed for delivery classes S, W and E.
APPL is only allowed for delivery classes A and L .

Error message extract from SAP system. Copyright SAP SE.