An irrevocable LC is the Letter of Credit cannot be cancelled pr amended without the consent of all parties concerned. This is where the terms and conditions and the amount are renewed or restricted without specific amendments to the credit being needed.
An Irrevocable Letter of Credit, or ILOC, cannot be canceled or modified in any way without explicit consent by the affected parties involved. For example, the issuing bank has no power to change the terms of an ILOC simply because the requesting company changes their mind.
How to Write a Letter of Credit Prepare the letter of credit documents, including the credit application, bank instructions, and the credit agreement. Make sure all documents are signed, dated, and include all necessary information. Submit documents to the issuing bank. Confirm that the bank has accepted the documents.