I'm trying to model a system for e-procurement (request for buying goods, purchase orders, receiving and invoice verification).
I'm in the middle of drawing the use cases. I have drawn my primary use cases and I'm refining the first one.
The first use case is about this statement :
A person in the company is a member of a team that execute projects. For the execution of a specific project that person need to buy a specific amount of goods. To be able to do that they select in the application one or several items from a catalog referencing products and suppliers. They select all the products they need and insert them into a request. The request has to be validated by a supervisor before it is sent to the buyings department. The validation information is present in the project management system (which is external to the application I'm supposed to make).
This is the use case I came with
Can anyone correct me if I'm wrong.