Diagnosis
V1 v2 is part of a retail plant.

System Response
Customers and vendors which are part of the retail plant cannot beprocessed in the customer or vendor dialog, as this would causeconsistencies in the address data.
Address data for the plant is forwarded to the customer and vendor fromplant maintainence (transactions Plant Create,Plant Change so that the data does not have to bemaintained twice.
However, address data which is maintained in the customer/vendor masteris not automatically updated in the plant.

Procedure
Maintain customer/vendor data in the Plant master.