Available line = credit line approved by the bank-unpaid bill debt-unrecorded but occurred transaction amount-other related interest and expenses.
Note: The unrecorded amount refers to the amount that the credit card transaction has been accounted for, but you have not returned it; Cumulative used unrecorded amount refers to the amount of credit card transactions that have occurred but have not been accounted for; Other related interests and expenses refer to interest such as cash withdrawal or installment payment.