A:Answer Hello. To erase a message on the built-in answering system of the phone, on the base unit press PLAY and the unit will playback all the messages, when you wish to erase one, press the ERASE button on the base unit. If you encounter any issues, please contact the Support Team via Live Chat on the Panasonic Website, Contact Us option, Mon-Fri, 9am-5pm EST and they will help you out further.-G