The field or property 'X' does not exist
What causes it and how to fix it:
- Enumerate every site from the browser console (no admin API, no tooling)contentclass:STS_Site OR STS_Web over Search REST lists every web the account can read, no admin role or tooling; plus the traps of a cross-site F12 sweep (Hidden filter, case-sensitive GetList, 400 vs 404, per-web digest)Cause and fix →