when I try to add new record to MySql datebase I face this error message:

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Error
SQL-query :

INSERT INTO `VisualBasicBank` (`BankID`, `Task`, `Author`, `EmailOrHomePage`, `DateSubmitted`, `Category`, `Url`, `Code`, `View`) VALUES ('130', 'NULLrty', 'NULLry', 'NULLrty', 'NULLrty', 'NULLrt', 'NULLrey', 'NULLery', 'NULLrey');

MySQL said:

Duplicate entry '127' for key 1
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How can I solve this problem. ?

note : when I remove row and try to add new one , it's added without problem but when I try to add new one it give me the same error.. What can I do ?

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