Number range for document types

Hi Experts,

I have two company codes CO1 & CO2 in the same client 800.

For doc type DR number range R1: 1000 - 2000 is assigned in CO1 using the T code OBA7. And in CO2 number range for DR is R2: 5000 - 6000.

Fiscal year is 2008 for both comp codes.

Problem is when I post cust. invoices in comp code CO1 error msg pops up ' number range R2 not assigned in comp code CO1'. I checked OBA7 and DR shows the num range R2 which is for comp code CO2. And if I change it to num range R1 then I cannot post invoice in comp code CO2. same appears for all the doc types.

As far as I understand number ranges are specific to comp code and fiscal year. Is there any way I can post invoice in both comp code without going to OBA7 and change number range for the doc type everytime I select a different comp code.

Anil