Heartland: Unexpected 500 when postal code contains whitespace

[jorbascrumps]

Submitting a purchase request with a postal code that contains whitespace returns the following error from the Heartland API:

<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soap:Body>
    <soap:Fault>
      <soap:Code>
        <soap:Value>soap:Sender</soap:Value>
      </soap:Code>
      <soap:Reason>
        <soap:Text xml:lang="en">Unable to process request.  Message failed validation.  The 'http://Hps.Exchange.PosGateway:CardHolderZip' element is invalid - The value 'N1N 1N1' is invalid according to its datatype 'http://Hps.Exchange.PosGateway:zipType' - The Pattern constraint failed.  (line#2,pos#515)</soap:Text>
      </soap:Reason>
      <soap:Node>http://cert.api2.heartlandportico.com/Hps.Exchange.PosGateway/PosGatewayService.asmx</soap:Node>
      <soap:Detail />
    </soap:Fault>
  </soap:Body>
</soap:Envelope>