condition check before Creating auto PO

Question: Hi friends,
I need some help from sap gurus.
I got a requirement. I will get few PRs every day from legasy system.
I need to create PO from those PRs. The creation of PO has to be automatic. i.e creating Auto purchase order.
I know auto PO transaction is ME59.
But the requirement is , I need to check few conditions like vendor name etc..before creating auto PO.

so, how to do this? is there any user-exit for doing this in ME59?
or is there any other solution for doing this?
plz help me which user-exit solves this problem?

thanks in advance,
Priyanka

Answer:
Hi ,

I have one Question ? how Do u Create POs. u are saying AUTOmatic PO Creation , for what one also u have to Create a BDC or some otherwise ? So check in that program only .
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Pepsi India
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