I am not good at English lenguage so i’ll write a topic most shortly as possible.
I’ll explain an user case that i’m thinking.
A client create a purchase order of a product.
Before He/She pay her products I have to know if manufacturers have stock on her distribution points.
So, my question is ... Are there any way that when user create their purchase She/he wait our Confirmation from our side to check if we have all products that they are needed?