Application of Standard Invoice to a prepayment invoice wherein Tax is applied at different rates un

Hi,

We have came across following India localization issue

There is one prepayment in OU X.on which tax is deducted at 2% under 194 (C) which is booked in supplier ZZZ  -site A

There is another standard invoice in the same OU on which tax is deducted at 10% under section 194 J in supplier ZZZ  -site B

User applied prepayment  to the standard invoice  and system allowed him to apply the same even though both the invoices are booked in different supplier sites having different taxes. However the RTN were not generated for tax deducted on prepayment.

The question is

1. Does R12 supports application of prepayment  to standard invoice across supplier sites within one OU and