output invoice as well as VAT invoice

Dear All,

I am working on a client who has 10% VAT maintained as one of the condition type in pricing procedure. This is not CIN.

Client needs 2 output once billing saved. One is invoice output that is normal case and another VAT invoice.

Can anyone please suggest me how to get VAT invoice too along with actual invoice as a output.

Thanks & Regards

Vishwas