title: An invalid value was provided for the parameter 'deviceNumber' while registering multiple devices
body: <p>I did it before, i.e., registered multiple devices (iPads) just by uploading a text file containing UDIDs and names, and it worked fine, but today I get this error: &quot;An invalid value was provided for the parameter 'deviceNumber'&quot;.
  I have 70 empty slots, and am trying to add 10 devices.</p>
  <p>What is device number? There is no such a thing in the sample files they provide, just device id and name.</p>