---
title: "response_header"
url: "https://docs.adyen.com/point-of-sale/classic-library-deprecation/classic-library-integrations/c-library-integration/structs/response_header"
source_url: "https://docs.adyen.com/point-of-sale/classic-library-deprecation/classic-library-integrations/c-library-integration/structs/response_header.md"
canonical: "https://docs.adyen.com/point-of-sale/classic-library-deprecation/classic-library-integrations/c-library-integration/structs/response_header"
last_modified: "2026-05-23T12:56:20+02:00"
language: "en"
---

# response\_header

[View source](/point-of-sale/classic-library-deprecation/classic-library-integrations/c-library-integration/structs/response_header.md)

The **response\_header** contains the following data elements:

| Field                    | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| ------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `terminal_id`            | The `terminal_id` of the PED.                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| `tender_reference`       | A reference to the tender provided by the PED.                                                                                                                                                                                                                                                                                                                                                                                                                        |
| `additional_data_struct` | For included data elements, see the `additional_data_struct` struct page.`status_info` returns additional information.                                                                                                                                                                                                                                                                                                                                                |
| `state`                  | Enum of type `TENDER_STATE` and contains the transaction state, which is `ADDITIONAL_DATA_AVAILABLE`. `status_info` returns additional informationFor example if `TENDER_STATE` is:- `APPLICATION_SELECTED` - The `status_info` contains the application preferred name.
- `CARD_SWIPED` - The `status_info` may contain the text "fallback" when it is a fallback transaction.
- `PIN_ENTERED` - The `status_info` contains the number of pin digits entered so far. |
| `parsed_result`          | The result of processing by the PED, library, or PSP.                                                                                                                                                                                                                                                                                                                                                                                                                 |