7 CFR § 718.306 - Finality.
(a) A determination by an FSA State or county committee (or employee of such committee) becomes final on an application for benefits and binding 90 days from the date the application for benefits has been filed, and supporting documentation required to be supplied by the producer as a condition for eligibility for the particular program has been filed, unless any of the following exceptions exist:
(1) If, as a result of the erroneous decision, payment was issued, no action will be taken by FSA, CCC, or a State or county committee to recover unearned payment amounts unless one or more of the exceptions in paragraph (a) of this section applies;
(2) If payment was not issued before the error was discovered, the payment will not be issued. FSA and CCC are under no obligation to issue payments or render decisions that are contrary to law or regulation.
(c) FSA and CCC will modify and correct determinations when errors are discovered. As specified in paragraph (b) of this section, FSA or CCC may be precluded from recovering unearned payments that issued as a result of the erroneous decision. FSA or CCC's inability to recover or demand refunds of unearned amounts as specified in paragraph (b) will only be effective through the year in which the error was found and communicated to the participant.