There may be the following reasons for the deduction of 400 yuan from Pudong Development Credit Card:

1. Overdraft or debt: If your credit card account has an overdraft or unpaid debt , the bank may automatically deduct the corresponding amount when you repay the loan.

2. Annual fees or other fees: Credit cards usually charge annual fees or other related fees, and banks have the right to deduct these fees from your account within a specific period of time.

3. Cashback for consumption: If you use a Pudong Development Bank credit card for consumption and enjoy the cashback discount, the bank may deduct the corresponding cashback amount from your account during settlement.

Summary: The deduction of 400 yuan from Pudong Development Credit Card may be caused by overdrafts, arrears, annual fees, other expenses or consumption cash rebates. For specific circumstances, you may need to check your credit card transaction records or contact your bank for more accurate information.

Extended information: A credit card is a convenient payment tool provided by banks. Cardholders can make purchases within a certain limit and repay within a specified time. Shanghai Pudong Development Credit Card is a credit card product issued by Shanghai Pudong Development Bank of China, which provides cardholders with a variety of benefits and services.