After configuring Tixt in your dashboard you will see the notification:
"Your dedicated ConnectWise API member is Tixt. ConnectWise Tickets updated by this member will be processed."
This is not an issue but rather a default warning.
This warning indicates that you can't use the API Member Tixt to send SMS messages. ConnectWise API member is reserved exclusively for Tixt configuration and should not be used for sending text messages to Tixt number.