The XML parse error 0xc00ce502 occurred on line number 1, near the XML text "<ROOT><ARTICLES><ARTICLE TiltID=2 MastID=2 MastLiftID=2 CapacityID=3 /></ARTICLES></ROOT>".
Msg 6602, Level 16, State 2, Procedure sp_xml_preparedocument, Line 1
The error description is 'A string literal was expected, but no opening quote character was found.'.
Msg 8179, Level 16, State 5, Procedure p_BulkInsertTiltValues, Line 14
Could not find prepared statement with handle 0.
The statement has been terminated.
Msg 6607, Level 16, State 3, Procedure sp_xml_removedocument, Line 1
sp_xml_removedocument: The value supplied for parameter number 1 is invalid.

p_BulkInsertTiltValues 
(@ArticleData ntext) 
AS
DECLARE @hDoc int
exec sp_xml_preparedocument @hDoc OUTPUT,@ArticleData
BEGIN
SET NOCOUNT ON;
	INSERT INTO tbl_TiltValue_Association(TiltID, MastID, MastValueID, CapacityID)
	SELECT *      
	FROM OPENXML(@hDoc, 'ROOT/ARTICLES/ARTICLE',1)  
	WITH ( TiltID Int  , MastID Int, MastLiftID Int, CapacityID Int )  XMLEmp
	EXEC sp_xml_removedocument @hDoc
END

Exec p_BulkInsertTiltValues '<ROOT><ARTICLES><ARTICLE TiltID=2 MastID=2 MastLiftID=2 CapacityID=3 /></ARTICLES></ROOT>'