(a) [Term or law restricting assignment generally ineffective.]
A term in a letter of credit or a rule of law, statute, regulation, custom, or practice applicable to the letter of credit which prohibits, restricts, or requires the consent of an applicant, issuer, or nominated person to a beneficiary's assignment of or creation of a security interest in a letter-of-credit right is ineffective to the extent that the term or rule of law, statute, regulation, custom, or practice:
(1) would impair the creation, attachment, or perfection of a security interest in the letter-of-credit right ; or
(2) provides that the creation, attachment, or perfection of the security interest may give rise to a default, breach, right of recoupment, claim, defense, termination, right of termination, or remedy under the letter-of-credit right .
(b) [Limitation on ineffectiveness under subsection (a).]
To the extent that a term in a letter of credit is ineffective under subsection (a) but would be effective under law other than this article or a custom or practice applicable to the letter of credit, to the transfer of a right to draw or otherwise demand performance under the letter of credit, or to the assignment of a right to proceeds of the letter of credit, the creation, attachment, or perfection of a security interest in the letter-of-credit right :
(1) is not enforceable against the applicant, issuer, nominated person, or transferee beneficiary;
(2) imposes no duties or obligations on the applicant, issuer, nominated person, or transferee beneficiary; and
(3) does not require the applicant, issuer, nominated person, or transferee beneficiary to recognize the security interest, pay or render performance to the secured party , or accept payment or other performance from the secured party.