Invoice Posting

Hi:

I have a question about posting invoices for a vendor.

e.g. I received an invoice for 5 purchase orders from vendor a for $1000.

When user entered invoice through transaction MIRO he entered those 5 purchase orders for vendor A and in addition he entered another PO3 for vendor B. I want to show error message If vendor in PO differs.

Is there a way to configure this??

Thanks