A letter of credit, confirmation, advice, transfer, amendment or cancellation may be issued in any form that is a record and is authenticated (i) by a signature, or (ii) in accordance with the agreement of the parties or the standard practice referred to in Section 75-5-108(e).
Formal requirements
Miss. Code Ann. § 75-5-104, under Uniform Commercial Code—Revised Article 5. Letters of Credit.
Miss. Code Ann. § 75-5-104