The document should carry any one of the following endorsements, as applicable:
Supply meant for export on payment of IGST Supply meant for export under bond or letter of undertaking without payment of IGST
Also, the document should contain the following details of the recipient:
Name and Address
Address of Delivery
Name of the country of Destination
(ICAI FAQ PUBLICATIONS 06-09-2017 TAX INVOICE CREDIT AND DEBIT NOTES : FAQ NO. 46)