1. In order to ensure the security of the account, it is necessary to verify the SMS verification code when selling the fund through WeChat wealth management, so as to ensure the true identity of the account holder and prevent the economic loss caused by account theft.

2. There may be some restrictions on the WeChat wealth management fund, such as the maximum daily selling amount and the single payment limit. If the user's payment behavior exceeds these limits, it may be necessary to verify the verification code.