We are trying to setup a custom confirmation control key that will allow us to receive the goods via MIGO_GR, then receive the advanced shipping notice afterwards. We see that if we do not select either, we can do the GR immediately but we cannot receive the ASN. Any assistance would be appreciated.
Standard System Behaviour
Once a vendor confirmation has been entered into the system and the goods are confirmed delivered, you are able to post the Goods receipt either through transaction MIGO with reference to the purchase order or in transaction MIGO with reference to the inbound delivery. The goods receipt for an inbound delivery can also be posted via transaction VL32n (in the event that the confirmation control involves an inbound delivery, which is not always the case). Both options are provided by the system design.
After this you will receive the ASN notification.
But if we do direct GR without confirmation you will not receive the ASN.
And please refer the below blog to get more information.