Error validating [action]: ''inventory', 'False''

This error occurs when you choose the action inventory but don’t provide a listing_id.

You can solve this problem by:

• Provide the listing_id
• Use action update to create or completely update products
• Use action partial_update to update products

You cannot update Etsy listings without the listing_id. You can retrieve your listing_ids by exporting your Etsy listings.