Using the Form Input Fields When typing in data into any of the input fields, note the following conventions: • In the web form (as it appears on the screen), all required fields are shown in red. • With some exceptions, fields cannot contain special or reserved (non alphanumeric) characters. If you enter an invalid character, the system generates the message that indicates what characters are not allowed. • The underbar character (_) is allowed in device names, but the hyphen (-) is not allowed: