541.404—Transactions incidental to a licensed transaction authorized.
         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  § 541.201(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.