Due to the enterprise's own reasons, there are forbidden words in the verification code SMS, and the delivery failed. The short message signature format of verification code is incorrect, or inconsistent with the signature submitted for filing. Distribution failed.

The collection quantity exceeds the set range. Why should I set the number of times to get the verification code? Wouldn't it be better for users to take it as many times as they want? Actually, it is not. In order to prevent being swiped, the number of times to obtain the verification code of each number every day is generally set. For example, the same mobile phone number can be obtained up to 5 times a day, up to 3 times an hour, and the effective time is 3 to 5 minutes. If the limit is exceeded, the delivery fails.

The verification code is described in detail as follows:

The verification code is a public automatic program, which is used to distinguish whether the user is a computer or a person. The verification code question is generated and judged by the computer, and only humans can answer it, which can prevent malicious password cracking. It can be divided into Gif animation verification code, mobile phone short message verification code, mobile phone voice verification code and video verification code. The verification code of most websites needs to click the fill-in box, and then the verification code picture will automatically pop up.

The verification code of most websites needs to click the fill-in box, and then the verification code picture will automatically pop up. Because the verification code is randomly generated, there is a great chance that there will be a picture of the verification code that cannot be clearly identified, so it should be noted that the general website will have corresponding tips. If there is no prompt, click the current verification code picture directly to complete the replacement of verification code.