webDriver error code

The WebDriver API indicates the success or failure of a command invocation via a status code on the Response object. The following values are used and have the following meanings.

Status Code	Summary	Detail
0	Success	The command executed successfully.
7	NoSuchElement	An element could not be located on the page using the given search parameters.
8	NoSuchFrame	A request to switch to a frame could not be satisfied because the frame could not be found.
9	UnknownCommand	A command could not be executed because the remote end is not aware of it.
10	StaleElementReference	An element command failed because the referenced element is no longer attached to the DOM.
11	ElementNotVisible	An element command could not be completed because the element is not visible on the page.
12	InvalidElementState	An element command could not be completed because the element is in an invalid state (e.g. attempting to click a disabled element).
13	UnknownError	An unknown error occurred in the remote end while processing the command.
15	ElementIsNotSelectable	An attempt was made to select an element that cannot be selected.
17	JavaScriptError	An error occurred while executing user supplied JavaScript.
19	XPathLookupError	An error occurred while searching for an element by XPath.
21	Timeout	An operation did not complete before its timeout expired.
23	NoSuchWindow	A request to switch to a different window could not be satisfied because the window could not be found.
24	InvalidCookieDomain	An illegal attempt was made to set a cookie under a different domain than the current page.
25	UnableToSetCookie	A request to set a cookie's value could not be satisfied.
26	UnexpectedAlertOpen	A modal dialog was open, blocking this operation.
27	NoAlertOpenError	An attempt was made to operate on a modal dialog when one was not open.
28	ScriptTimeout	A script did not complete before its timeout expired.
29	InvalidElementCoordinates	The coordinates provided to an interactions operation are invalid.
30	IMENotAvailable	IME was not available.
31	IMEEngineActivationFailed	An IME engine could not be started.
32	InvalidSelector	Argument was an invalid selector (e.g. XPath/CSS).
33	SessionNotCreated	A new session could not be created.
34	MoveTargetOutOfBounds	The target for mouse interaction is not in the viewport and cannot be brought into the viewport.

Error codes less than 34 that are not listed in this table are obsolete and reserved. They must not be used.