There is an unknown problem in inserting data into the database

The data inserted in the personnel management platform I made by myself prompts that this ID card number already exists , But the database clearly does not have this ID number , When setting the database, I set the ID card field to unique , Insert data successfully today , Insert the data that cannot be inserted before, and then say that this ID number already exists , What is the problem ？ Say the parameters passed by the front end are wrong , But some data can be inserted , No mistakes reported ！！ Who has experienced similar problems ！！

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Take the answer ：

Is it verified on the client , And there are problems in the verification of the client .

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