This module is used to add products in sale and purchase order using barcode scanner.

-- Search product for entered barcode if barcode is valid ean13.

-- In case entered barcode is not valid ean13 or product is not found with barcode value then it matches the entered barcode with internal reference of product.

-- If product line already exists in order, it increases ordered qty by one.

Add products to sale order

Add products to purchase order

Raise warning if product does not exists or if found that product can not be sold or purchased.

Unique Constraint for barcode and internal reference fields

Does not allow to assign barcode and internal reference that is already assigned to a product.

Find requirements.txt file for required python package.