You can add the buyer's details at the transaction level. The following table summarizes the available fields:

Field	Description
`buyer_name`	Buyer's first name and last name.
`buyer_email`	Buyer's email address.

You can also include an address such as Ship To Address. This is explained in the Addresses topic.

You can also capture a Buyer's Tax ID in the buyer_tax_number field. This is explained in the Vertex Validator topic.

Example

The following example adds the details at the transaction level:

{
    "transaction": {
        "tax_timestamp": "2025-03-01T12:00:00Z",
        "description": "Transaction description",
        "currency_code": "EUR",
        "buyer_name": "Test buyer",
        "ship_to_address": {
            "country_code": "GB",
            "city": "Big city",
            "street_name": "Street name",
            "building_number": "100a",
            "address_detail": "2nd fl",
            "postal_code": "00000"
        },
        "billing_address": {
            "country_code": "GB",
            "city": "The big city",
            "street_name": "The street name",
            "building_number": "100a",
            "postal_code": "00000"
        },