S&D document type of item category & does not match that of delivery type

What causes this issue?

The sales document category of the delivery type lets the system know
whether it is dealing with an inbound or outbound delivery. This
information is also on the item category level so that item categories
are not used for an inbound and an outbound delivery simultaneously. You
attempted to assign the item category to a delivery type that had a
different sales document category.

System Response

IF &[SWITCH]S4H_DOCU_ON_PREMISE& = 'X'.

How to fix this error?

Choose an item category with the same sales document category as the
delivery type or change the sales document category in the delivery item
category activity in Customizing.

Procedure for System Administrators

ENDIF.

Error message extract from SAP system. Copyright SAP SE.