Hi, The scenario is like this.When a customer buys a product from the company he is provided with a delivery challan or a delivery note first before issuing the customer invoice.This delivery challan/delivery note is considered as a proof that the product is delivered.It consists of the details of product delivered,quantity,rate of the product and all.The generation of the delivery note/delivery challan should reflect in all aspects like decrease of stock of the corresponding product.How to generate such a delivery note/challan?