For an affidavit to be valid, it is essential that the affidavit be sworn to, or affirmed before, a notary public or some other officer authorized to administer oaths. It is also essential that the affiant be identified as to name, residence and, where appropriate or required by law, as to status or capacity. This is ordinarily done in the introductory paragraph to the affidavit.
The following form is by an affiant as an attorney-in-fact for a corporation.