What is the ruling on my work as an accountant in a documentation office that deals with usurious loans from banks, where I record the mortgage registration operations related to these loans?

Recording a transaction, receiving an interest-based loan, and handing it over to the borrower constitutes aiding in sin, and Allah Almighty has forbidden that, saying: "And cooperate not in sin and aggression." Therefore, one must refrain from this transaction, and there is no harm in the rest of the permissible work of the office.