Identifiers and Classifications

You can add the following information for identification and classification purposes:

A description
Your ecommerce/order IDs
A parcel reference text
The product's class
A carrier ID

You add these as fields in the JSON for the relevant request.

The following table summarizes the relevant fields:

Field	Description
`description`	This is the description of the product being sold and will appear on the VAT invoice.
`product_class`	This field is mandatory. See Product Classes.
`custom_id`	Identifier for the specific transaction line item. The `custom_id` field is required for schema validation but you do not have to enter a value.For more information, see Adding your eCommerce/Order IDs to Transactions.
`parcel_reference`	Identifier reference for the parcel (This field is optional).
`carrier_id`	Identifier for the postal carrier.
`seller_code`	The unique code that is used to identify the seller. It cannot be the same as the one used for the `marketplace_code` field.
`marketplace_code`	The unique identifier for a marketplace. It is created by Vertex and it cannot be the same as any values used for `seller_code` fields.

For a full list of the fields in this object, see Fields Reference Overview.

For example:

"description": "Example sale to GB.",
		"transaction_lines": [
			{
				"custom_id": "line_1",
				"amount": 150,
				"ship_from_address": {"country_code": "CN"},
				"product_class": "P",
				"description": "Goods #1",				
				"parcel_reference": "3897329872423",
				"carrier_id": "DHL",
			},