A ProcessRobot User cannot connect to the Sidebot (the message reading "Invalid username/Password" is displayed) and the following message is logged on the Control Desk: "Sidebot Cannot be registered due to the assignment of the same robot on 'Username@'Machine Name'

As Sidebots are registered per ProcessRobot User, this means that a Sidebot User can only be connected to a single machine at the same time. In order to remedy this, please log off the other machine and then connect to the Sidebot.