Description:
'EtsyError: Invalid taxonomy_id'
This means you entered a value that does not correspond to any Etsy taxonomy values.
Solution:
Make sure to enter a valid taxonomy id into the column.
To find your taxonomy_id go to the Templates (must be logged in) page.
Note: If you are using a custom Shop Uploader template you do not need to worry about taxonomy_ids.
For more information on making a custom Shop Uploader template visit the How do I add product properties to my Shop Uploader templates? article.
For more information on taxonomy_id visit the documentation page.