The buying of goods derives from customers' orders which contain articles not being on stock as well as articles which have fallen below its minimal stock. Regarding the amount of stock, the "physically present stock" and its already sold amount (reserved part) as well as the already ordered parts of the articles are considered.
The articles needed to buy and their number are administrated in individual parts of data which are made into orders being put together according to deliverers (if need be, differentiated according to customers' orders). Analogously to the selling prices, the buying prices are determined for the sets of the buying data. As a sequence of the completion of orders:
· the confirmation of orders of the deliverer, · the incoming delivery of goods (considering the minimal amount), · as well as the incoming invoices