The new unique ID contains an unknown HTML tag.

The identifier could not be inserted because it references a tag that is not part of the recognized HTML tag set. Unique Ids can contain only HTML tags recognized by Microsoft^® Internet Explorer 4.0.

• To correct this error, enter an HTML tag recognized by Internet Explorer 4.0.

For more information, see Insert New Unique ID Dialog Box. For more information about HTML tags recognized by Internet Explorer 4.0, see the HTML documentation.