I can't set up a publication alert for a particular title? Why?

I can not set up a publication alert for a particular title? Why?

There are several reasons why the Set up alert option may not be available for a publication:

Alerts may only be set up for titles with current full-text or citations
Certain publishers do not allow ProQuest to offer a publication alerts service for their titles.
It is not possible to offer publication alerts for certain non-periodical publications, such as Hoover's Company Records.
Publication alerts are not available for Historical Newspapers or titles included in the American Periodical Series because these are retrospective collections.