Feed field reference
The exact fields each marketplace expects, for a given country and product type. Read live from the taxonomy currently in force, so it reflects what the marketplace will accept today.
Pick a marketplace, a country and a product type, and you get the fields that product type requires — read from the taxonomy currently in force rather than from a copy taken at some point in the past.
That distinction matters. Marketplaces change their schemas, and a field list captured months ago is a list of fields the marketplace may already have stopped accepting. This is also why there is no version picker: the current schema is the only one worth building against.