$ pulp-admin consumer add_keyvalue --id foo --key jdob --value zombie
error: operation failed: Traceback (most recent call last):
  File "/home/jdob/code/pulp/src/pulp/server/webservices/controllers/base.py", line 57, in report_error
    return method(self, *args, **kwargs)
  File "/home/jdob/code/pulp/src/pulp/server/webservices/controllers/consumers.py", line 504, in POST
    return action(id)
  File "/home/jdob/code/pulp/src/pulp/server/webservices/role_check.py", line 131, in check_roles
    result = f(instance, *fargs, **kw)
  File "/home/jdob/code/pulp/src/pulp/server/webservices/controllers/consumers.py", line 313, in add_key_value_pair
    consumer_api.add_key_value_pair(id, data['key'], data['value'])
  File "/home/jdob/code/pulp/src/pulp/server/compat.py", line 38, in _decorator
    return decorator(*args,**kwargs)
  File "/home/jdob/code/pulp/src/pulp/server/auditing.py", line 204, in _audit
    result = method(*args, **kwargs)
  File "/home/jdob/code/pulp/src/pulp/server/api/consumer.py", line 159, in add_key_value_pair
    'from that group and try again.', key, conflicting_group)
PulpException: u'Given key [jdob] has different value for this consumer because of its membership in group [bar]. You can delete consumer from that group and try again.'