+"402" is an [HTTP status code](/wiki/HTTP_status_code) indicating "Payment Required." Reserved for future use, it signals that the requested content cannot be accessed until a payment is made. Though seldom employed in practice, it resides within the [Client Error](/wiki/Client_Error) class of responses.
+## See also
+- [HTTP](/wiki/HTTP)
+- [Status code](/wiki/Status_code)
+- [Web server](/wiki/Web_server)
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