I recently created AMP pages (Google's Accelerated Mobile Pages) as per the requirements mentioned in AMP Project Documentation. I didn't add any rich snippets as it was non-mandatory (although recommended) as per the documentation (refer to metadata section).
However, after going live, I have received the following errors in the Google Search Console:
Add required structured data to your AMP pages
Google systems have detected that some of your AMP pages are missing structured data that is required for the page to appear in Google Search results with AMP-related features. The following report provides examples of pages with this (and other) errors:
Is it mandatory to have structured data (rich snippets) in the page?