POST https://wwwcie.ups.com/ups.app/xml/AV

<?xml version='1.0' standalone='yes'?>
<AddressValidationRequest>
  <Address>
    <CountryCode>US</CountryCode>
    <PostalCode>12345</PostalCode>
  </Address>
  <Request>
    <RequestAction>AV</RequestAction>
    <TransactionReference>
      <CustomerContext>Net::Async::Webservice::UPS</CustomerContext>
      <XpciVersion>1.0001</XpciVersion>
    </TransactionReference>
  </Request>
</AddressValidationRequest>

<?xml version="1.0"?><AddressValidationResponse><Response><TransactionReference><CustomerContext>Net::Async::Webservice::UPS</CustomerContext><XpciVersion>0</XpciVersion></TransactionReference><ResponseStatusCode>0</ResponseStatusCode><ResponseStatusDescription>Failure</ResponseStatusDescription><Error><ErrorDescription>manual failure for testing</ErrorDescription><ErrorSeverity>medium</ErrorSeverity><ErrorCode>999</ErrorCode></Error></Response></AddressValidationResponse>