Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello Yong Sheng Tan,
Good day!
Thank you for posting to Microsoft Community. We are happy to help you.
Based on my experience this error " Error creating endpoint. Looks like you do not have permission" pop up because usually in Google admin console + domain-wide authority was not enabled and you have to define the scope for the service account.
I advise you to follow the steps below to migrate from Google Workspace to Microsoft 365.
To set up the Subdomain aliases: https://docs.microsoft.com/en-us/exchange/mailbox-migration/googleworkspace-migration-prerequisites
To create the service account: https://docs.microsoft.com/en-us/exchange/mailbox-migration/manually-configuring-gsuite-for-migration
Migration: https://docs.microsoft.com/en-us/exchange/mailbox-migration/manual-gspace-migration-newea
Appreciate your patience and understanding and thank you for your time and cooperation.
Sincerely,
Eben Ezer Tres | Microsoft Community Moderator