38 C.F.R. § 1.673
(a) In the event an allotment or an apportionment is exceeded except in the circumstances described in paragraph (b) of this section, the following factors will be considered in determining which official, or officials, are responsible for the violation.
(b) In the event that the sum of the allotments made in a particular fiscal year exceeds the amount apportioned by the Office of Management and Budget, and the apportionment is subsequently exceeded because of this action, the official who made the excess allotments will be the official responsible for the violation.
(Authority: 31 U.S.C. 1514)