Restrict the possibilty to send cXML invoices the more than one position referencing same PO item

[RichardWagner]

Hi experts,

is there any option to forbid suppliers to post invoices to SAP Business Network (former Ariba Network), if in the invoice is more than 1 position referencing same purchase order item?
e.g. PO123 Pos 0010: ordered 10 EA
first delivery 8 EA
second delivery 2 EA
Invoice (e.g. end of month) 2 invoice position 
Pos 1: 8 EA referencing PO123 Pos 0010
Pos 2: 2 EA referencing PO123 Pos 0010

This should be not possible and result in an rejection for the supplier. He should invoice:
Pos 1: 10 EA referencing PO123 Pos 0010

btw: Customer does not use GR-based IV flags and his invoice management does not support same reference twice or more often in same invoice.
thx
Richard