27 C.F.R. § 24.22
(a) General. The proprietor, on specific approval of the appropriate TTB officer as provided in this section, may use an alternate method or procedure in lieu of a method or procedure specifically prescribed in this part. As used in this section, an alternate method or procedure also includes alternate construction or equipment. No alternate method or procedure relating to the giving of any bond or to the assessment, payment, or collection of tax, will be authorized under this section. The appropriate TTB officer may approve an alternate method or procedure, subject to stated conditions, when in the judgment of the appropriate TTB officer:
(c) Conditions. The proprietor shall, during the period of authorization for an alternate method or procedure, comply with the terms of the approved application. Authorization for any alternate method or procedure may be withdrawn whenever in the judgment of the appropriate TTB officer the revenue is jeopardized or the effective administration of this part is hindered by the continuation of the authorization.
(Sec. 201, Pub. L. 85-859, 72 Stat. 1395, as amended (26 U.S.C. 5556))
(Approved by the Office of Management and Budget under control number 1512-0292)
[T.D. ATF-299, 55 FR 24989, June 19, 1990, as amended by T.D. ATF-409, 64 FR 13683, 13684, Mar. 22, 1999]