In the UG,  It should say > 'To add or change a phone number, PHONE must be empty or different from the current phone number (if exists)' as the current wording means that the PHONE has to have a number before adding a number. <!--session: 1744358338682-806cb31d-2728-4898-b770-03baebfc4372--> <!--Version: Desktop v3.6.1-->
In the UG,
It should say
as the current wording means that the PHONE has to have a number before adding a number.