Office 365 Migrations
In most situations, CloudMigrator requires both Application Impersonation configured within Exchange Online, and Global Admin permissions within Office 365.
Please ensure that your specified Migration Admin account does not have Multi-Factor Authentication (MFA) enabled and is not subject to Conditional Access policies.
There are some situations where these permissions may not be able to be granted due to client or platform restrictions, described below are the specific permissions that CloudMigrator requires for migration scenarios
Exchange Application Impersonation must be configured for all mailboxes you wish to migrate data into or from.
Application Impersonation can be configured using the "Setup Administrative Permissions" button from the Destination platform configuration page
Alternatively, you can configure Application Impersonation manually by following this article: Setting up Application Impersonation.
For situations where you are migrating a subset of your users, or Application Impersonation can't be configured for the whole user base, an Exchange Write scope can be configured, prior to configuring Application Impersonation. See the following article: Setting up an Exchange Write Scope
Sharepoint / OneDrive Migrations
CloudMigrator requires Site Collection administrator rights over the objects you are migrating into or from. In most situations, this can be achieved by granting your migration Admin account "SharePoint Administrator" within Office 365.
More information on configuring this can be found here, from Microsoft: About the SharePoint admin role in Office 365.
For situations where this is not possible, you are able to manually assign Site Collection Administrator rights to Sharepoint objects. Please see this article for more information: Assigning Site Collection Permission Manually
G Suite Migrations
CloudMigrator requires a service account to be configured within G Suite.
See this article for more information: Setting up the Service Account and enable the APIs within G Suite (Google Apps) for CloudMigrator