There are four main methods for documenting specific business processes, systems, and so on

If I were assigned the work, I would begin with the generating the order first and then will decide the proper plan that will help in completing the order. After this, I would perform a check credit function and will decide the time for production. Then later, after the completion of the order, I would produce an invoice and will ship the order to their respective destinations.

In the second option, if I were asked to document AIS, then the process will start by checking the credits. Credits of the customers will be checked in this stage, and later when it is done, I will approve the credit along with approving the shipping of the consumers.