That is, credit cards are temporarily controlled.

U deduction on a credit card means that the card has been processed as undelivered, T deduction means that the card has been temporarily controlled, N deduction means that the card password has been entered incorrectly and is locked, etc.

Currently, the bank front desk can only perform unlocking operations for credit card blocking codes for departmental T deduction control reasons and N deductions. Others require the help of credit card customer service.