Here’s what I do to detect deprecated fields. I paste my query into the Shopify GraphiQL API page and check every field to look for the deprecation message.
For example, if you are using Order.referrerUrl, deprecation message suggests “Use customerJourneySummary.lastVisit.referrerUrl instead”.
I thought you were having this issue on GraphQL. I didn’t use the REST version much. But, I think the URL returns some deprecated fields and if you’re using these fields you should be careful.
You’re welcome. Shopify verification process may take long but I assume it is unrelated to this topic. If my answer solves your deprecation issue please accept the answer to keep the platform clean and you can open another issue.