No plant supplier exists for plant &1

What causes this issue?

You want to stage the material from another plant using a purchase
order. The issuing plant &v1&
in this case lies in another company code from
plant &v2&
of the control cycle. In this case, you have to define a plant
supplier for the issuing plant &v1&.

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?

You can assign the plant supplier to the plant in the vendor master
record (transaction
<DS:TRAN.MK02>MK02</>) in the purchasing data view under
<LS>Extras -> Extra Data Purchasing</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.