Although it’s technically not a requirement, it is strongly recommended that you create a new user and do not use an existing user’s credentials. In order to securely synchronize data between hh2 and your Timberline server, the hh2 client must access your Sage database using a set of authenticated user credentials. Although they could be an existing user’s own credentials, it’s not recommended as there might be a conflict of interest. For example, if that user changed his/her password, the connection to hh2 would instantly break.
See Create an hh2 Service Account in Sage for more information.