To quit, write a simple letter addressed to your supervisor that says nothing more than you are resigning, and which day will be your last. Don't mention your reasons or future plans, no complaints, just your resignation and effective date.
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.