Delivery item &1 of delivery &2 is not relevant for POD

What causes this issue?

The delivery item is not POD-relevant. Therefore, you cannot enter or
display any quantities for the POD for this item.
IF &[SWITCH]S4H_DOCU_ON_PREMISE& = 'X'.
A delivery item is POD relevant, for example, if:
Customizing for the item category has been set accordingly,
POD relevance has been set in the customer or supplier master,
this is a batch split item (the relevant main item is not POD relevant)
ENDIF.

Error message extract from SAP system. Copyright SAP SE.