Inbound delivery Goods Receipt
What is purpose of working with inbound delivery & GR with reference to PO.
In which scenario is Inbound delivery concept is used?
1) while creating IBD inventory will not update , it is not possible to make GR for po qty if IBD for 5 no's system will allow you to do gr for 5 only w.r.t. IBD.
2) You can use MIGO w.r.t IBD no issues in that.
IBD will be used when vendor will udate the delivery schedule , ASN (Advance shipping notification) in po conformation tab you will find this options this concept is very much use full if you have SAP SRM module.