Checkout fields are used to gather information from the client related to their order. Unlike product additions, checkout fields do not affect the price of the product.
Checkout fields are configured in WP admin ➝ Product types ➝ Edit product type ➝ Checkout fields
The available field types are:
Checkout fields appear in the second step of the Product form
All provided information become available to the product vendor, in the singe order page.