How to cancel the second authentication of postal savings bank transfer

According to the network information query, the steps to cancel the second authentication of postal savings bank transfer are as follows: I need to bring my ID card and bank card to the business outlets for conversion, because this online transfer function must be handled by myself. Generally, the restrictions on SMS authentication transfer are relatively small. If you need to transfer a large sum of money, you can bring your ID card and bank card to the bank outlet to change the authentication method to dynamic token authentication.