Got a validation error.

Hi,

 I try to validate a soap message, but it always show me an error : line -1: null...

I really don't understand what it means. Can anyone help me with this?

Below is my soap message.  Thanks!

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:user="http://userprofile.esm.dteco.com/v1/userprofileresponses" xmlns:v1="http://esm.dteco.com/common/v1"><soapenv:Header/><soapenv:Body><user:UpdateUserProfileResponse><v1:Header><v1:Verb>change</v1:Verb><v1:Noun>?</v1:Noun><!--Optional:--><v1:Channel>NWB</v1:Channel><!--Optional:--><v1:Transaction>?</v1:Transaction><!--Optional:--><v1:Revision>?</v1:Revision><!--Optional:--><v1:Context>DEVELOPMENT</v1:Context><!--Optional:--><v1:Timestamp>2015-07-08T07:39:18-04:00</v1:Timestamp><!--Optional:--><v1ource>?</v1ource><!--Optional:--><v1:AsyncReplyFlag>true</v1:AsyncReplyFlag><!--Optional:--><v1:ReplyAddress>?</v1:ReplyAddress><!--Optional:--><v1:AckRequired>true</v1:AckRequired><!--Optional:--><v1:User><v1:UserID>?</v1:UserID><v1rganization>?</v1rganization></v1:User><!--Optional:--><v1:MessageID>?</v1:MessageID><!--Optional:--><v1:CorrelationID>?</v1:CorrelationID><!--Optional:--><v1:Comment>?</v1:Comment><!--Zero or more repetitions:--><v1roperty><v1:Name>?</v1:Name><!--Optional:--><v1:Value>?</v1:Value></v1roperty><!--You may enter ANY elements at this point--></v1:Header><v1:Reply><v1:ReplyCode>SUCCESS</v1:ReplyCode><!--Zero or more repetitions:--><v1:Error><v1:level>INFORM</v1:level><v1:code>?</v1:code><!--Optional:--><v1:xpath>?</v1:xpath><!--Optional:--><v1:details>?</v1:details><!--Optional:--><v1:context>?</v1:context></v1:Error><!--Zero or more repetitions:--><v1:ID>?</v1:ID><!--You may enter ANY elements at this point--></v1:Reply></user:UpdateUserProfileResponse></soapenv:Body></soapenv:Envelope>