> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chift.eu/llms.txt
> Use this file to discover all available pages before exploring further.

# Invoice

### Definition

In the PMS API, an invoice is a billing document issued to a guest or a booking agent. It summarizes the charges for a stay or service.

<Note>
  "Invoice" also exists in the [Accounting API](/unified-apis/accounting/concepts/invoice/index) (an entry that generates journal entries automatically) and the [Invoicing API](/unified-apis/invoicing/concepts/invoice) (a standalone billing document).
</Note>

### Purpose

Invoices serve as the billing record for the property. They drive the collection and accounting processes.

### Relationships

* An invoice belongs to a customer.
* It references one or more orders or services.

### Endpoints

| Method | Endpoint                                                                             | Description               |
| ------ | ------------------------------------------------------------------------------------ | ------------------------- |
| GET    | [Get invoices](/api-reference/endpoints/property-management-system/get-invoices-pms) | Retrieve all PMS invoices |

### See also

* [Customers](/unified-apis/pms/concepts/customer)
* [Locations](/unified-apis/pms/concepts/location)