vs2012开发了webserver服务测试的问题：

将测试数据：

<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:acc="http://nm.cmcc.com/usersync/account">
   <soap:Header/>
   <soap:Body>
      <acc:addUserInfo>
         <!--Optional:-->
         <acc:userInfos>&lt;?xml version="1.0" encoding="UTF-8"?>&lt;accounts>&lt;account>&lt;o>00420079214000000000&lt;/o>&lt;preferredMobile>15904874651&lt;/preferredMobile>&lt;cn>张楠&lt;/cn>&lt;displayOrder>00420079214000000000/200&lt;/displayOrder>&lt;uid>zhangnan5&lt;/uid>&lt;duty>00420079214000000000-1007&lt;/duty>&lt;/account>&lt;/accounts></acc:userInfos>
      </acc:addUserInfo>
   </soap:Body>
</soap:Envelope>

改为：

<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
   <soap:Header/>
   <soap:Body>
      <addUserInfo>
         <!--Optional:-->
         <userInfos>&lt;?xml version="1.0" encoding="UTF-8"?>&lt;accounts>&lt;account>&lt;o>00420079214000000000&lt;/o>&lt;preferredMobile>15904874651&lt;/preferredMobile>&lt;cn>张楠&lt;/cn>&lt;displayOrder>00420079214000000000/200&lt;/displayOrder>&lt;uid>zhangnan5&lt;/uid>&lt;duty>00420079214000000000-1007&lt;/duty>&lt;/account>&lt;/accounts></acuserInfos>
      </addUserInfo>
   </soap:Body>
</soap:Envelope>

测试失败：

失败返回为：  <soap:Text xml:lang="en">System.Web.Services.Protocols.SoapException: The request element &lt;addUserInfo xmlns=''> was not recognized.

请各位大侠帮忙看看是什么问题？非常感谢！