Generate Invoice
When you create a Sales Order, the system will check the availability of the products in the warehouse.
If you select the Generate Invoice button, you will be provided an Invoice Number.
After you have given the bill and accepted the payment, it will be ready to ship to the customer.
As you can see, the stocks were deducted when you generated the invoice.
Generate INSL
When you create a Sales Order, the system Does Not check the availability of products in the warehouse. If you choose the Generate INSL button, you will only be given an Invoice Number.
However, it has not yet been deducted from the warehouse.
You will have the Invoice Number only.
After you've delivered the bill and received payment, you must proceed to Dispatch, confirm that the SO has packed the quantity.
And then generate the second invoice, this is to deduct the quantities in the warehouse (Option 6). Then it will be ready for shipment to the customer.
After you confirm the invoice, it will log the stock in the inventory logs, deduct stocks from the warehouse, and ship.
