BRS wrongly Auto knocked off

HI Friends,

We have X vendor with two invoices 10000 each

Similarly we have Y vendor with one invoice 10000

we paid two invoices to X vendor each 10000

Auto BRS happend wrongly 10000 to X vendor and 10000 to Y vendor. Where as the 20000 should go to X vendor only.

It would be great if some one can help me in resolving the issue.?

Thanks

Prasad