All stock is stored in a stock centre, and all quantities are stored by batch. Simple and is locked into the design which means that all products must be traceable. They will have been dispensed from a particular place like a car, one of the branches, the main site, or an Internet stock centre, and they will have come from a recorded batch. Products can be linked to any number of suppliers, and apply manufacturer and supplier discounts, allowing dolitl to calculate the true net cost. Package inserts, instructions, warnings, labels, pictures and other documents can also be stored against a product, while pricing structures can vary between stock centres.