1. Error in filling in bank card information: When binding a bank card, you need to enter the correct basic information such as card number, name and ID number. If any information is incorrect or inconsistent with the registration, the binding will fail.
2. Bank reserved mobile phone number error: If the entered mobile phone number is inconsistent with the bank reserved mobile phone number, the binding will also fail.
3. The credit card overdraft limit is full: If the user is trying to bind the credit card to the ICBC App and the credit card has reached the overdraft limit, the binding fails.
4. The version of the App is too low or there are network problems: If the user uses the too low version of the ICBC app, there may be some problems during the operation.