p><pre class="programlisting">http://mechanicalturk.amazonaws.com/?Service=AWSMechanicalTurkRequester
&amp;AWSAccessKeyId=<em class="replaceable"><code>[the Requester's Access Key ID]</code></em>
&amp;Version=2008-08-02
&amp;Operation=RejectAssignment
&amp;Signature=<em class="replaceable"><code>[signature for this request]</code></em>
&amp;Timestamp=<em class="replaceable"><code>[your system's local time]</code></em>
&amp;AssignmentId=123RVWYBAZW00EXAMPLE456RVWYBAZW00EXAMPLE
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