Create PO with refrence to multiple PR

Hi,

We have requirement to create an automated program where one of the requirement is to create an PO with refrence to multiple PR for single vendor. As per my knowledge ME21N can be use to create PO with refrence to multiple PR, but from the technical point of view as this is enjoy transaction and it will not support BDC program.

My question is, is there any other transaction code which we can use to create PO with refrence to multiple PR and it will support BDC program also.

Thanks...

Imran