GET https://sandbox.mont.ru/Version2/Service/B2BServiceV2Xml.svc/CancelReserve?reserveNum=2082

<?xml version="1.0" encoding="utf-8"?>
<CancelReserveResponse xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <CancelReserveResult>
        <Data>true</Data>
        <IsError>false</IsError>
        <ErrorCode>0</ErrorCode>
        <Errors/>
    </CancelReserveResult>
</CancelReserveResponse>

POST https://sandbox.mont.ru/Version2/Service/B2BServiceV2.svc

<CancelReserve>
  <MethodParameters>
    <reserveNum>2083</reserveNum>
  </MethodParameters>
</CancelReserve>

<CancelReserve>
  <MethodParameters>
    <WebStoreResponseContractOfboolean>
      <Data>True</Data>
      <ErrorCode>0</ErrorCode>
      <ErrorText isNull="true" />
      <Errors attr0="ErrorContractArray" isNull="false" />
      <IsError>False</IsError>
    </WebStoreResponseContractOfboolean>
  </MethodParameters>
</CancelReserve>