Invoice Number

The Invoice Number is a unique identification number on a commercial invoice in foreign trade, assigned by the exporter to distinguish different transactions, orders, or shipment batches. Under Letter of Credit (L/C) payment terms, the invoice number must strictly match the numbers on the L/C and other documents (such as the Bill of Lading, Packing List, and Insurance Policy); otherwise, it may constitute a discrepancy and lead to bank refusal. Use cases include: customs declaration, settlement of exchange, tax refund, reconciliation, and dispute resolution. Precautions: 1. The invoice number should be unique and traceable, typically including the year, customer code, or order number; 2. If the L/C stipulates a format for the invoice number, it must be strictly followed; 3. Unlike a Proforma Invoice No., the commercial invoice number is the number of a formal settlement document, while a proforma invoice number is only used for quotations or L/C applications; 4. Once determined, the invoice number should not be changed arbitrarily; if modification is needed, a correction letter should be issued. Distinction: The invoice number is different from the contract number and order number. The contract number is the number of the agreement signed by both parties, the order number is the buyer's purchase instruction number, and the invoice number is the seller's settlement document number. The three can be related but must not be confused.