The account number was entered incorrectly and the transfer was successful. There are several solutions:
1. Seek help from the customer service of the bank: If you find a transfer error, you can call the customer service of the bank where the account is opened to explain the reason and seek help from the customer service. If the amount is huge and the time is urgent, it is best to ask at the bank counter;
2. If you contact the payee, you can negotiate repayment with the payee;
3. If the payee refuses to refund, you can appeal to the payee.