1. Invoice: A commercial document that itemises and records a transaction between a Supplier and Buyer, including issuance of self-billed e-Invoice to document an expense.
2. Credit Note: A credit note is issued by Suppliers to correct errors, apply discounts, or account for returns in a previously issued e-Invoice with the purpose of reducing the value of the original e-Invoice. This is used in situations where the reduction of the original e-Invoice does not involve return of monies to the Buyer;
3. Debit Note: A debit note is issued to indicate additional charges on a previously issued e-Invoice; and
4. Refund Note: A refund note e-Invoice is a document issued by a Supplier to confirm the refund of the Buyer’s payment. This is used in situations where there is a return of monies to the Buyer.
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