A generic Sender ID is a Sender ID provided by Kaleyra that is whitelisted on the operator level and can be used to send SMSes to locations that have these particular requirements. You can contact our Hexa support team (support@kaleyra.com) to allocate a generic Sender ID to your account. If an account has only admin level approved Sender ID, then SMSes to these locations will be triggered with the generic Sender ID that is assigned.