Description:
Error validating [action]: ''inventory', 'False''
This happens when you set the action column to inventory but leave the listing_id column empty.
Solution:
If you are uploading new products change the action column to update
If you are updating a listing's inventory add the appropriate listing_id
You can find your product's listing_id via the Shop (must be logged in) page.
Navigate to the Download Listings page
Click Create New Export
Click Refresh (wait and repeat until the export is finished)
Download the export
Locate your listing
Copy the corresponding listing_id
Paste it into the listing_id column in the document you are uploading
