Why did I get result code -30?

A negative number or a special character was passed as the timeout value.

Review the script or code from your website or application. Confirm that a negative number or a special character is not being passed as the timeout value.

Note: The default value of the examples provided in the SDK documentation is 30 seconds. We recommend you use this as your timeout value.

See also:
RESULT Values and RESPMSG Text