Different order supplier & for delivery costs item in PO &

What causes this issue?

You are entering an invoice for delivery costs and entered <LS>Selection
supplier</> &V3& as the allocation criterion.
You entered a .
In a delivery cost item for purchase order &V2& the conditions supplier
&V1& has been entered; that is why the item is not selected.
INCLUDE MM_IV_MELDUNGEN OBJECT DOKU ID TX

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check your entries and make any necessary corrections.

Error message extract from SAP system. Copyright SAP SE.