GA shows cart as landing page but not indexed

Why am I getting Google Organic from a page not indexed in Google

[rwilson]

Google Analytics shows my cart as a landing page that is getting google organic traffic. Google Search Console doesn't show that page at all. I have it blocked in robots.txt. My cart in theory should not be a landing page in Google.

Is there a reason for this? Am I misinterpreting the "Landing Page" dimension?

[Andy Langton]

Not an answer to your question, but I was looking at something similar today - email tracking URLs listed as Google organic landing pages. Not indexed, and not reported in Search Console. "Full referrer" for the URLs is listed as "google" and keyword is "(not provided)". Perhaps a GA bug?

[rwilson]

That sounds very similar. Do you have a web version of your emails hosted on your site?

[Andy Langton]

No, they're externally hosted. It's not a small number of pages, either (several hundred).