Any published notice that affects or may affect any interest in real property must, in addition to the legal description, contain either (a) a street address or other information which would be of assistance to the public in ascertaining the location of the property; or (b) the name and telephone number of a person, firm or business office from whom information concerning the location of the property may be obtained; provided, however, that the adequacy of the information not essential to a proper legal description shall not give rise to a jurisdictional defect in a proceeding or action contemplated by the published notice.