Excuse me, are you asking the reason for the verification error of Tangshan Bank's recharge signature? The reasons are network connection error, data transmission error, parameter error and so on. , as follows:

1. Network connection problem: Signature verification error is caused by unreliable or unstable network connection. In the process of recharging, if the network connection is interrupted or other problems occur, the signature verification will be wrong.

2. Data transmission error: Signature verification error may also be caused by data transmission error. If packet loss, data corruption or transmission errors occur during data transmission, it may lead to signature verification errors.

3. Parameter error: the correctness of signature verification depends on the accuracy of the passed-in parameters. If the parameters passed in are wrong, such as order number, amount or other key parameters, the signature verification will be wrong.