## Documentation Index

Fetch the complete documentation index at: [/llms.txt](https://developer.fabric.inc/llms.txt)

Use this file to discover all available pages before exploring further.

**Invoices** API helps in generating invoices that can be used by any third party system for order fulfillment operation. [Download Postman Collection](https://github.com/FabricCommerce/public-fabric-api-postman-collections/blob/main/v3/ordersInvoices.json)

### Useful Links
- [Get package tracking acknowledgement by order ID](https://developer.fabric.inc/v3/orders-and-inventory/api-reference/orders/tracking/get-package-tracking-acknowledgement-by-order-id)
- [Create invoice](https://developer.fabric.inc/v3/orders-and-inventory/api-reference/orders/invoices/create-invoice)