# 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"}}}}}}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

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

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.