Tax calculation problem in MIRO

Dear All,

I have a problem in MIRO.

I have created "X" vendor (AP) and maintained "Y" (Maharastra) as Invoicing party in partner roles. I have raised the PO on "X" with JVRD condition as he is a local vendor and got the material from "X". But while doing MIRO "Y" got defaulted in invoicing party and JVRD condition is not getting calculated. If I change invoicing Party as "X" the JVRD value is getting calculated. What customisation I have to do to get "JVRD" calculated eventhough the invoicing party is "Y".

Thanks in advance

Regards,

Kumar