& & is part of a retail site

What causes this issue?

&V1& &V2& is part of a retail plant.

System Response

Customers and vendors which are part of the retail plant cannot be
processed in the customer or vendor dialog, as this would cause
consistencies in the address data.
Address data for the plant is forwarded to the customer and vendor from
plant maintainence (transactions <DS:TRAN.WB01>Plant Create</>,
<DS:TRAN.WB02>Plant Change</> so that the data does not have to be
maintained twice.
However, address data which is maintained in the customer/vendor master
is not automatically updated in the plant.

How to fix this error?

Maintain customer/vendor data in the <DS:TRAN.WB02>Plant master</>.

Error message extract from SAP system. Copyright SAP SE.