The call to get the verification code interface failed.

You can check whether the mailbox is full first. If yes, please delete some information, but you still can't receive it after deletion. You can change your phone or card to see if it is a hardware factor. After eliminating the above reasons, you can try to see if it can be received in other places to see if it is the reason for the weak local signal. If the above problem does not exist, please contact the local manual customer service to handle this problem.

Technical realization:

1. The user fills in the mobile phone number and clicks the "Get Verification Code" button.

2. The website or APP generates SMS verification code according to the rules, and sends the user's mobile phone number and verification code content to the verification code SMS platform through the SMS verification interface.

3. After a series of judgments (account balance, content compliance, mobile phone number compliance, and the operator to which the mobile phone number belongs), the verification code SMS platform submits the information to the server of the corresponding operator.

4. The operator sends the SMS content to the user's mobile phone. Similarly, the process of retrieving the password and getting the coupon is similar to this.

Refer to the above? Baidu Encyclopedia-SMS Verification Code Interface