31 C.F.R. § 542.404 Transactions incidental to a licensed transaction.
Title 31 - Money and Finance: Treasury
Any transaction ordinarily incident to a licensed transaction and necessary to give effect thereto is also authorized, except: (a) An incidental transaction, not explicitly authorized within the terms of the license, by or with a person whose property or interests in property are blocked pursuant to §542.201(a); or (b) An incidental transaction, not explicitly authorized within the terms of the license, involving a debit to a blocked account or a transfer of blocked property.
Title 31: Money and Finance: Treasury
PART 542—SYRIAN SANCTIONS REGULATIONS
Subpart D—Interpretations
§ 542.404 Transactions incidental to a licensed transaction.