Indicates that this field will be overwritten when the user's alias is changed with SetAliases or when the Account's Nickname is updated.
Clients that allow the editing of the Alias and the ContactInfo in the same location should hide fields with this flag. If a client allowed the user to edit both the nickname and the ContactInfo field at the same time, the user could set them to two different values even though they map to the same property. This would result in surprising behavior where the second value would win over the first. In addition to hiding this field when editing ContactInfo together with the user's nickname, it is recommended that clients call SetContactInfo before setting the user's nickname. This ensures that if the user changes the nickname, the correct value will get set even if the stale nickname is mistakenly sent along with SetContactInfo. If used, this flag typically appears on either the 'nickname' or 'fn' field.