Blackberry 6720 - Manual (Page 260)

Troubleshooting
260 BlackBerry Wireless Handheld
Unable to find specified
service If this message appears, the service to which your message is
addressed is not available. Insert your handheld into the cradle
and connect to the desktop software to receive the correct
service information.
Unknown error This message might appear when you generate an encryption
key manually and click Update to copy the new encryption key to
your handheld. An error occurred as your computer and your
handheld were exchanging information. Verify that the email
address that is specified in the Redirector Settings tool on the
Advanced tab is correct. Verify that your handheld is registered
on the network and that is inserted correctly in the cradle. Update
the encryption key again. Refer to the Redirector Settings Online
Help for more information.
If you continue to receive this message, contact your system
administrator.
Unlisted message error If this message appears, there was a problem sending your
message. Resend the message. If you continue to receive this
message, contact your service provider or network operator for
more information.
Transmission error Description