1. In law, the transfer of rights, title, interests and benefits of a contract or financial instrument to a third party.
2. In letters of credit, the beneficiary of the letter of credit is entitled to assign his/her claims to any of the proceeds that he/she may be entitled to, or portions thereof, to a third party. Usually the beneficiary informs the issuing or advising bank that his/her claims or particle claims under the letter of credit were assigned and asks the bank to advise the assignee (third party) that it has acknowledged the assignment. The validity of the assignment is not dependent on bank approval. In contrast, the transfer requires the agreement of the nominated bank. An assignment is possible regardless of whether the letter of credit is transferable. See letter of credit.