Cause
This error usually happens to new users. Etsy doesn’t allow you to publish listings with titles made of all capital letters, while other channels do (like eBay).
Solution
You should use Titles in Lowercase. Nembol has a function designed for this issue.
Go to your Channels Tab, open the Etsy settings, and under “List to Etsy”, activate the Titles in Lowercase function. This will automatically fix all of your titles and solve the error on Etsy’s side.
Leave the function ON so that you won’t experience the same issue in the future.
