title: Unable to order snapshot space
body: <p>I see that my volume does not have space. Both, the SL portal and SL API confirm that there is no snapshot space. 
  The volume object in question has these details (There is no 'snapshotCapacityGb')- </p>
  
  <p>{'username': 'XXX', 'capacityGb': 100, 'hostId': '', 'serviceProviderId': 1, 'nasType': 'NAS', 'upgradableFlag': True, 'storageTypeId': '13', 'createDate': '2016-09-26T18:06:09+05:30', 'serviceResourceName': 'XXX', 'hardwareId': '', 'serviceResourceBackendIpAddress': 'XXX.service.softlayer.com', 'notes': '', 'guestId': '', 'id': XXX, 'accountId': XXX}</p>
  
  <p>Yet, while trying to order snapshot space via SL API, I get an error that the <strong>volume already has snapshot space</strong>. </p>
  
  <p>What could be the reason for such error?</p>
  
  <pre><code>check_order = SL.instance(sl_config).storage_order.verifyOrder(order)
  File "/usr/lib64/python2.7/site-packages/SoftLayer/API.py", line 385, in call_handler
    return self(name, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/SoftLayer/API.py", line 353, in call
    return self.client.call(self.name, name, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/SoftLayer/API.py", line 256, in call
    return self.transport(request)
  File "/usr/lib64/python2.7/site-packages/SoftLayer/transports.py", line 187, in __call__
    raise _ex(ex.faultCode, ex.faultString)
  SoftLayer.exceptions.SoftLayerAPIError: SoftLayerAPIError(SoftLayer_Exception_Public): The storage volume with id XXXX already has snapshot space
  </code></pre>