If your source or destination platform is G Suite, you need to setup Google Console project before proceeding for migration. Follow below given steps to create a google console project:
Go to the cloud platform https://console.developers.google.com/ and Sign in
Before starting the migration process you need to enable number of APIs. To enable the APIs select the API and click on the Enable option. You can use search option to easily find the APIs.
The APIs are:
Enable Admin SDK API
Enable Google Drive API
Enable Gmail API
Enable Google Calendar API
Enable Contacts API
Then Go to Admin Console and you will be redirected to the browser where you have to login using the source/destination admin email id .
Enter the Client Id (created in step 10) and add below permissions in "OAuth Scopes(comma-delimited)" field as shown below:
G Suite as Sourcehttps://www.googleapis.com/auth/gmail.readonly,
G Suite as Destinationhttps://www.googleapis.com/auth/gmail.insert,
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