While sending ESX hypervisor details to the satellite v 6, virt-who fails with the error "Validation failed: Name is invalid, Name is invalid"

Issue

• While sending ESX hypervisor details to the satellite v 6, virt-who fails with the error below:

2016-07-06 11:52:00,873 [ERROR]  @subscriptionmanager.py:171 - Communication with server failed:
Traceback (most recent call last):
  File "/usr/share/virt-who/manager/subscriptionmanager/subscriptionmanager.py", line 167, in hypervisorCheckIn
    result = self.connection.hypervisorCheckIn(config.owner, config.env, serialized_mapping)
  File "/usr/lib64/python2.7/site-packages/rhsm/connection.py", line 903, in hypervisorCheckIn
    res = self.conn.request_post(url, host_guest_mapping)
  File "/usr/lib64/python2.7/site-packages/rhsm/connection.py", line 647, in request_post
    return self._request("POST", method, params)
  File "/usr/lib64/python2.7/site-packages/rhsm/connection.py", line 564, in _request
    self.validateResponse(result, request_type, handler)
  File "/usr/lib64/python2.7/site-packages/rhsm/connection.py", line 611, in validateResponse
    raise RestlibException(response['status'], error_msg, response.get('headers'))
RestlibException: Task b939db82-76e4-4c06-b711-6d506a59032c: ActiveRecord::RecordInvalid: Validation failed: Name is invalid, Name is invalid
2016-07-06 11:52:00,874 [ERROR]  @virtwho.py:177 - Unable to send data: Communication with subscription manager failed with code 500: Task b939db82-76e4-4c06-b711-6d506a59032c: ActiveRecord::RecordInvalid: Validation failed: Name is invalid, Name is invalid
2016-07-06 11:52:00,877 [ERROR]  @virtwho.py:305 - Sending data failed 5 times, report skipped