# Extra Merchant Data

The [Checkout](/contents/api/checkout), and [Customer Token](/contents/api/customer-token) APIs expect the `attachment.body` property to have a string value containing a serialized JSON object, whose structure is reflected by the following [JSON schema](/assets/extra-merchant-data.0f2cecb26b31cbe0e8016eefea2b760fd19ea03ada6f185ec6757eae24ef21a1.a98c0ced.json).

## Supported Fields

| Field Name | Type | Description |
|  --- | --- | --- |
| **air_reservation_details** | Array of objects | Information about air travel reservations and passengers. |
| **bus_reservation_details** | Array of objects | Information about bus travel reservations and passengers. |
| **train_reservation_details** | Array of objects | Information about train travel reservations and passengers. |
| **ferry_reservation_details** | Array of objects | Information about ferry travel reservations and passengers. |
| **hotel_reservation_details** | Array of objects | Information about hotel room reservations. |
| **trip_reservation_details** | Array of objects | Information about trip reservations that include multiple services, such as flight, hotel, and train reservations, where details are unavailable at the time of booking. |
| **car_rental_reservation_details** | Array of objects | Information about car rentals and drivers. |
| **event** | Array of objects | Information about events, including venue and ticket details. Can be used for all types of events, including entertainment and educational ones. |
| **voucher** | Array of objects | Information about purchased vouchers. |
| **marketplace_seller_info** | Array of objects | Information about merchants selling goods in marketplaces. |
| **marketplace_winner_info** | Array of objects | Information about customers purchasing goods in marketplaces. |
| **customer_account_info** | Array of objects | Information about customers registered in merchant stores. |
| **payment_history_full** | Array of objects | Detailed information about purchases made by registered customers in a merchant's store. |
| **payment_history_simple** | Array of objects | Basic information about customers who made at least one purchase in a merchant's store. |
| **in_store_payment** | Array of objects | Information about in-store payments. |
| **customer_tokens** | Array of objects | Information about customer tokens used for subscription charges. |
| **other_delivery_address** | Array of objects | Information about alternative non-residential delivery addresses, such as stores or pick-up points. |


For more details, refer to the [JSON schema](/assets/extra-merchant-data.0f2cecb26b31cbe0e8016eefea2b760fd19ea03ada6f185ec6757eae24ef21a1.a98c0ced.json).