Authenticate Manually Created App Registration

Once an App Registration has been created on the customer M365 tenant Azure, you can authenticate it as part of the Onboarding process using the following methods:

Configure the App registration credentials in the Onboarding wizard. In this case, the customer provides you with these credentials (Tenant ID, Application (client) ID value and Client secret value). See Authenticate App Registration from Onboarding Wizard.
Configure the App registration credentials in the Invitation wizard. The wizard can be triggered through an authentication URL which can be sent in an email to either the Live Platform M365 admin user or to the customer M365 admin user. See Authenticate App Registration from Invitation Wizard.