Account with privileges. Type the user name (domain\user name format or an email address) for an account that has the necessary ...

Account with privileges. Type the user name (domain\user name format or an email address) for an account that has the necessary administrative permissions in the on-premises organization. %BRAND_OFFICE_365_SHORT% will use this account to detect the migration endpoint and to test the permissions assigned to this account by attempting to access the mailbox with the specified email address.