A client ID is a collection of all the Fast-Tax accounts and users who belong to the same organization. It is one of the four components needed to login to TrustEase Administrator's Workstation. The other three include your organization's client password, your user ID and your user password. Depending on your organization, there may be more than one client ID.
Your organization's client ID is assigned by Fast-Tax and cannot be changed. Contact your TrustEase administrator if you do not know your organization's client ID.