USER EXIT

Dear All,

I have three Company code and six Sales Organization. I have used same billing document for all the Company code. To get different number range for billing document I am using USEREXIT. My doubt is for Accounting document (RV) is having separate number range and it should match with Billing document number range, for this what i suppose to do?

Is it availabe any USEREXIT for RV document? or is it same USEREXIT (SD) wil update both?

Can any body throw light on this?

Regards,

Srikanthraj