> For the complete documentation index, see [llms.txt](https://docs.2checkout.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.2checkout.com/api-reference/reference/invoices.md).

# Invoices

## Retrieve invoices for specific orders.

> The output contains the binary code for invoices in the PDF file format, Base64 encoded (Base64 is used to represent binary data in the ASCII string format).

```json
{"openapi":"3.0.0","info":{"title":"API REST Documentation","version":"6.0-oas3"},"servers":[{"url":"https://api.2checkout.com/rest/6.0"}],"paths":{"/invoices/{OrderReference}/":{"get":{"tags":["Invoices"],"summary":"Retrieve invoices for specific orders.","description":"The output contains the binary code for invoices in the PDF file format, Base64 encoded (Base64 is used to represent binary data in the ASCII string format).","parameters":[{"name":"OrderReference","in":"path","description":"Reference number for approved/paid orders.","required":true,"style":"simple","explode":false,"schema":{"type":"string"}},{"name":"Accept","in":"header","required":true,"style":"simple","explode":false,"schema":{"type":"string","default":"application/json","enum":["application/json"]}},{"name":"X-Avangate-Authentication","in":"header","description":"Authentication header","required":true,"style":"simple","explode":false,"schema":{"type":"string"}}],"responses":{"200":{"description":"OK","content":{"application/json":{"schema":{"$ref":"#/components/schemas/inline_response_200_4"}}}},"400":{"description":"Invalid data","content":{"application/json":{"schema":{"$ref":"#/components/schemas/inline_response_400"}}}}}}}},"components":{"schemas":{"inline_response_200_4":{"properties":{"filename":{"type":"string"},"data":{"type":"string"}}},"inline_response_400":{"type":"object","properties":{"error_code":{"type":"string"},"message":{"type":"string"}}}}}}
```

## Retrieve invoices for specific refunds.

> The output contains the binary code for invoices in the PDF file format, Base64 encoded (Base64 is used to represent binary data in the ASCII string format).

```json
{"openapi":"3.0.0","info":{"title":"API REST Documentation","version":"6.0-oas3"},"servers":[{"url":"https://api.2checkout.com/rest/6.0"}],"paths":{"/invoices/{OrderReference}/{Type}/{Count}/":{"get":{"tags":["Invoices"],"summary":"Retrieve invoices for specific refunds.","description":"The output contains the binary code for invoices in the PDF file format, Base64 encoded (Base64 is used to represent binary data in the ASCII string format).","parameters":[{"name":"Accept","in":"header","required":true,"style":"simple","explode":false,"schema":{"type":"string","default":"application/json","enum":["application/json"]}},{"name":"X-Avangate-Authentication","in":"header","description":"Authentication header","required":true,"style":"simple","explode":false,"schema":{"type":"string"}},{"name":"OrderReference","in":"path","description":"Reference number for approved/paid orders.","required":true,"style":"simple","explode":false,"schema":{"type":"string"}},{"name":"Type","in":"path","description":"One of the following: sale or refunds.","required":true,"style":"simple","explode":false,"schema":{"type":"string"}},{"name":"Count","in":"path","description":"Choose a specific item out of multiple invoices.","required":true,"style":"simple","explode":false,"schema":{"type":"number"}}],"responses":{"200":{"description":"OK","content":{"application/json":{"schema":{"$ref":"#/components/schemas/inline_response_200_4"}}}},"400":{"description":"Invalid data","content":{"application/json":{"schema":{"$ref":"#/components/schemas/inline_response_400"}}}}}}}},"components":{"schemas":{"inline_response_200_4":{"properties":{"filename":{"type":"string"},"data":{"type":"string"}}},"inline_response_400":{"type":"object","properties":{"error_code":{"type":"string"},"message":{"type":"string"}}}}}}
```


---

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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.2checkout.com/api-reference/reference/invoices.md?ask=<question>&goal=<endgoal>
```

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