Vendor Subrange for Different P.Organization in Info Record

Hello All,

I have a problem about the vendor subrange in purchasing info record. Let me explain,

I have two different Purchasing Organization,one material (for both organization) one vendor (for both organization) when I have created info record system

gives me one info record number. My problem is my vendor subrange should be different for both organization level. when I change the subrange for one of

the organizaiton and I saved, system autamaticallay change the other subrange for the other organization.

How can I fixed the problem. Is it a bug of SAP ?

Please send me your advice ..

thanks.