# Invoice

The `Invoice` family — 3 operations.

An invoice is the billing snapshot of an order — issue it for the full un-invoiced remainder or for chosen lines, and its figures freeze at issue. There is no editing an invoice: void it before revenue is recognized, or correct it with credit and debit notes.

## Operations

| Operation | Kind | What it does |
| --- | --- | --- |
| [invoice](/reference/invoice/invoice/) | query | Look up one record — an invoice — the billing document of a sale. |
| [invoices](/reference/invoice/invoices/) | query | The invoice list — each entry is an invoice — the billing document of a sale. |
| [voidInvoice](/reference/invoice/voidInvoice/) | mutation | Void an invoice — the billing document of a sale — cancel it as if it should not have happened, keeping the paper trail. |