When Should You Issue an Invoice? An invoice should be issued when the vendor (or supplier) has completed a customer's order. The order could be for products, services, or both. For a business that's providing a product, usually an invoice will be generated shortly after delivery.

What does invoice generated mean?

During Invoice Generation, the system: ... The workfile transactions are updated with the invoice information (batch number, invoice number, pay item, document type, and invoice date) to indicate that these transactions are included in an invoice.

Is invoice generated before or after payment?

An invoice comes before a payment has been, while a receipt comes after the payment has been made.