I am getting MAPPING EXCEPTION_DURING_EXECUTE

I am getting this error in my production error

if i go to SXMB_MONI - inbound messages/payloads/main documents , it is showing me

The XML page cannot be displayed

Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again later.

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A semi colon character was expected. Error processing resource 'file:///C:/Documents and Settings/gss00652/Local Settings/T...

<OrderDate>01052007</OrderDate><HeaderDStatus>491</HeaderDStatus><Item><ItemNo>10</It...

please help me in finding this one

thanking you

sridhar