Error: 'Not Found' from Google. Admin action is required.'

The user gets the 'Received error 'Not Found' from Google. Admin action is required' message.

How can I resolve the 'Not Found' from Google. Admin action is required.' issue?

Why do I see the 'Not Found' from Google. Admin action is required.' message for my calendar services?

One Button to Push (OBTP) with Google Calendar

The users might see this message if the calendar resource access is not enabled within Control Hub. Check to ensure the Calendar Resource Access option was enabled while deploying the Hybrid Calendar Service with Google Calendar.

To enable Calendar Resource Access:

Login to Control Hub
Click on Hybrid under Services section.

Go to the Google Settings.
In the Google Calendar section, under Calendar resources, check the My organization uses calendar resources (such as conference devices) check box.
Enter the name of an authorized access control list administrator account.

Note: Make sure you do not have a policy preventing external accounts from having to See all event details sharing privileges, and admins do not change this access through the room resource "Share with specific people" setting. Room resources that don't grant this access can't list meetings or show the Join button. See the following for additional resources: Deployment Guide for Cisco Webex Hybrid Calendar Service, Make it Easier for Video Devices to Join Meetings with OBTP.