Inter Company stock transfer

Hi,

We have activated intercompany purchase between two company code.

Now the problem is when receiving company is creating the inter company PO , they are not aware about the supplying plant.

For e.g we have a multi plant in supplying company and product move from 5-6 plant and some time it is not fixed and come to at the time of delivery.

So, in this case before doing delivery we need the functionlity to change the supplying plant in the PO.

Is there any other way to handle this issue.

Thanks,

Samir BHatt