For all addresses converted, awhere-used list (for addresses and persons) is created in BAS tables ADRV and ADRVP. This list is used as the basis for referential integrity when addresses are deleted or archived and is also required for identifying the owner object of an address.
The where-used list is also of practical benefit. For example, you can quickly determine the application to which the address data belongs. This allows you, for example, to assign business partner data based on the telephone number in the case of inbound calls.