Simple fix on issue:
Right now it is possible for user to receive and save SKUs that are not in a purchase order.
This is a major issue since such a Stock receipt will never authorize, since it is not a perfect match with the order.
By DEAR allowing you to save, they are basically forcing you down the line to a major fix of undoing several SOs (now linked to the incorrect received SKU) which can be several hours of work depending on sales volume
Enhancement - Upon hitting save, user should should get error message, if SKU received != SKU in order, not allowing user to proceed.