Scheduling agreements and GR

Hello GUrus,

I have to provide a demo about scheduling agrreements to my users and i was able to get to the point of creating SA and releasing them. But my next question is that how do we do the GR against a scheduling agreements. I checked in MIGO and there is no option to do gr against SA. Can some one please guide.

Or is it that there has to be a PO after a schedule line from SA has been transmitted to the vendor?

Thanks

Ravi