The act of substantiating or proving; evidence; proof.

additional proof that something that was believed (some fact or hypothesis or theory) is correct; "fossils provided further confirmation of the evolutionary theory"

The administrative procedure used to support a claim with proof of purchase.

A determination that an incapacitated adult meets all four (4) of the APS eligibility criteria.

In the context of reimbursed employee business expenses, the requirement that employees keep records of the time, place, and business purpose of reimbursable expenses they incur, including receipts (also used to track business use of company-provided vehicles).

the act of validating; finding or testing the truth of something