This error occurs when an existing truck is deleted in SuccessWare21, and the change has not yet reached SWRemote.
Please follow these instructions on Updating the Pricebook.
If the issue persists, please call the SWRemote Support Team at 1-800-566-6940, or put in a ticket by e-mailed to Support@swremote.com, and state that the trucks need to be updated due to receiving this error message. We will then confirm that we see specific truck updates. The application will need to be closed and re-launched to receive these changes.