With this TDL add-on you can restrict negative stock in Tally. In default Tally, you just get a warning message on negative stock but it allows you to continue selling products in negative and then later on it create tedious task to reconcile the stock. This TDL restricts the user to proceed further if selected product is not having sufficient available quantity. It restricts negative stock in Tally at following levels; Item Level Godown Level Batch Level Delivery Note Sales Invoice Stock Transfer Production Entry