HTTP/1.1 400 Bad Request
x-amzn-requestid: 072b30dc-3236-11e2-be9a-afe093ea636b
content-type: text/xml
content-length: 285
date: Mon, 19 Nov 2012 10:43:59 GMT

<ErrorResponse xmlns="http://cloudsearch.amazonaws.com/doc/2011-02-01">
  <Error>
    <Type>Sender</Type>
    <Code>MalformedInput</Code>
    <Message>Key -1 may not have a leading '-'</Message>
  </Error>
  <RequestId>072b30dc-3236-11e2-be9a-afe093ea636b</RequestId>
</ErrorResponse>
