Vendor Code Extension

Hi,

I need to extend a vendor code108801 from co code 1000 to 2000. Now i tried xk01 taking 108801 as a reference, however for co code 2000 I got the vendor number different. can i not have the same vendor code 108801 for co code 2000 ?

Also I would like to know what is vendor master transfer, just saw a t.code fk15 through which you can transfer the vendor master from one co code to another. Is this different from extending vendor to another co code ?

best regds

Subha