Google Assistant Production release got message: “For en: Your sample pronunciations are structured incorrectly.”

Production release of Google Assistant not working. It is always showing the message: "For en: Your sample pronunciations are structured incorrectly."

Solution

Make sure you have additional phrases setup correctly in the console. To do this

Select the Deploy tab along the top
Choose Directory Information on the left navigation
Make sure you have the English tab chosen, if you have multiple tabs
Open the Additional Invocation Phrases section
Make sure your additional phrases are in a valid form, or are filled in. This should be something like "Talk to..." or "Open..." followed by your invocation name.

Then resubmit your Action for approval.