Here is the validate fix button in Google Search Console for page indexing issues: Here is the email you get after you click it: Now, with 404 pages, I do not expect these to be marked as fixed.

Folks over at Android Authority have found a new "Details" button in the RCS chat settings in Google Messages version 'messages.android_20250713_01_RC00.phone.openbeta_dynamic.' ...

Google Messages might make it easier to fix RCS issues during the registration process. It may get a new Details button in the RCS settings.