Every tax invoice issued under GST has to contain certain details, which are mandatory to be mentioned. There is also a time limit within which an invoice should be issued. This checklist can be used by you to ensure that you issue valid and complete tax invoices. This will also help you to verify that the invoices received from your suppliers are complete, in order for you to claim input credit on them.
Should contain the name, address and GSTIN of the supplier
If the supply is of goods, quantity of the goods