The Sales Order and Purchasing Barcode App enables an organization to effectively manage the inflow and outflow of inventory in the warehouse. With the Sales Order and Purchasing Barcode App, a barcode will be generated for every sales order and line items. With the barcode printed, the warehouse user can simply scan the sales order and respective items through RF scanner or mobile devices while picking and packing sales items. This eliminates the need to manually enter the sales order and item number in the scanners. This will save a considerable amount of time for an organization and can greatly reduce manual errors such as typing incorrect item numbers.