<root> ... <Exception /> ... </root>
|Data type and length||None|
|Cardinality||0-1: Optional element that can occur once and only once.|
If an error occurs during the execution of a Discover method call or a single XMLA command in an Execute method call that prevents the method or command from completing, the root element for that method or command contains an Exception element and a Messages element. The Exception element indicates that an error which prevented the method or command from successfully executing occurred, and the Messages element contains the list of error or warning messages related to the error.