Error Handling

VoiceXMLKit uses a common set of return codes on error conditions to minimize the error processing required by the application. The following table provides a summary.

Error Constant	Value	Description
E_INVALIDARG	0x80070057	One or more arguments are invalid. Verify your parameter values used in invoking the method.
E_FAIL	0x80004005	Unspecified error. Exception handling catches as a non-specific failure.
E_NOINTERFACE	0x80004002	No such interface supported. Verify that the session with the recognizer or synthesizer is active before invoking the method.
E_OUTOFMEMORY	0x8007000E	Ran out of memory. There is not enough memory to complete the operation.
E_NOTIMPL	0x80004001	Not implemented. Contact Chant support for assistance.
CLASS_E_NOTLICENSED	0x80040112	Class is not licensed for use. Verify that your License and Serials property values are set before invoking any other methods.

Speech APIs (i.e., recognizer) may generate error codes. To monitor these error codes register an APIError event callback.

For VoiceXML syntax errors, consult the W3C VoiceXML specification for problem determination or contact Chant support for assistance.