Different Vendor picked up in invoice posting ref to Service entry sheet

Hi Experts,

There are many posts on scn.sap for this issue but none answered. Scenario is like User parking vendor invoice in MIR7 with reference to Service Entry Sheet & system picks different vendor than to PO vendor. User denying manual entering invoicing party & we dont use partner function.

Is there any check or message where if my invoicing party is different than PO Vendor system should throw error or should not allow to pass transaction..

Or do i have to raise it to SAP??

Regards,