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What do you mean, the 500 contract failed?
500 signature verification failure refers to the error caused by the failure to verify the signature of the request parameter or request header information when the interface is called. Signature verification is a security mechanism to confirm whether the request comes from a legitimate authorized initiator. The failure of signature verification may be caused by tampering with request parameters or invalid authorization information. When the error prompt of 500 sign-off failure appears, it needs to be checked and handled in time to ensure the safety and correctness of interface call.

In order to avoid the error of 500 authentication failure, we need to pay attention to the following points when calling the interface: First, before the request, we should verify the authorization to ensure that the request comes from a legally authorized initiator. Secondly, the request parameter or request header information is signed, and the signature information is added to the request. Finally, encrypt the request parameters and signature information, and pay attention to security during transmission to avoid information being tampered with and leaked.

When the 500 sign-off failure occurs, the cause of the error should be confirmed in time and investigated and handled. If there is a problem with the signature of request parameters or request header information, you can check whether the configuration information such as signature algorithm and signature key is correct. If the authorization information is invalid, you need to get the authorization information again and update it. At the same time, it is necessary to record logs and handle exceptions, and follow the interface call specification and security requirements during development to avoid similar problems.