error_tacker

tosca-parser failed: -
The pre-parsed input failed validation with the following error(s):

	UnknownFieldError: Group Type tosca.groups.nfv.VNFFG contains unknown field "requirements". Refer to the definition to verify valid values.
		File /usr/local/lib/python2.7/dist-packages/eventlet/greenpool.py, line 82, in _spawn_n_impl
			func(*args, **kwargs)
		File /usr/local/lib/python2.7/dist-packages/eventlet/wsgi.py, line 719, in process_request
			proto.__init__(sock, address, self)
		File /usr/lib/python2.7/SocketServer.py, line 649, in __init__
			self.handle()
		File /usr/lib/python2.7/BaseHTTPServer.py, line 340, in handle
			self.handle_one_request()
		File /usr/local/lib/python2.7/dist-packages/eventlet/wsgi.py, line 384, in handle_one_request
			self.handle_one_response()
		File /usr/local/lib/python2.7/dist-packages/eventlet/wsgi.py, line 481, in handle_one_response
			result = self.application(self.environ, start_response)
		File /usr/local/lib/python2.7/dist-packages/paste/urlmap.py, line 216, in __call__
			return app(environ, start_response)
		File /usr/local/lib/python2.7/dist-packages/webob/dec.py, line 130, in __call__
			resp = self.call_func(req, *args, **self.kwargs)
		File /usr/local/lib/python2.7/dist-packages/webob/dec.py, line 195, in call_func
			return self.func(req, *args, **kwargs)
		File /usr/local/lib/python2.7/dist-packages/oslo_middleware/request_id.py, line 37, in __call__
			response = req.get_response(self.application)
		File /usr/local/lib/python2.7/dist-packages/webob/request.py, line 1317, in send
			application, catch_exc_info=False)
		File /usr/local/lib/python2.7/dist-packages/webob/request.py, line 1281, in call_application
			app_iter = application(self.environ, start_response)
		File /usr/local/lib/python2.7/dist-packages/webob/dec.py, line 130, in __call__
			resp = self.call_func(req, *args, **self.kwargs)
		File /usr/local/lib/python2.7/dist-packages/webob/dec.py, line 195, in call_func
			return self.func(req, *args, **kwargs)
		File /usr/local/lib/python2.7/dist-packages/oslo_middleware/catch_errors.py, line 38, in __call__
			response = req.get_response(self.application)
		File /usr/local/lib/python2.7/dist-packages/webob/request.py, line 1317, in send
			application, catch_exc_info=False)
		File /usr/local/lib/python2.7/dist-packages/webob/request.py, line 1281, in call_application
			app_iter = application(self.environ, start_response)
		File /usr/local/lib/python2.7/dist-packages/webob/dec.py, line 130, in __call__
			resp = self.call_func(req, *args, **self.kwargs)
		File /usr/local/lib/python2.7/dist-packages/webob/dec.py, line 195, in call_func
			return self.func(req, *args, **kwargs)
		File /usr/local/lib/python2.7/dist-packages/keystonemiddleware/auth_token/__init__.py, line 467, in __call__
			response = req.get_response(self._app)
		File /usr/local/lib/python2.7/dist-packages/webob/request.py, line 1317, in send
			application, catch_exc_info=False)
		File /usr/local/lib/python2.7/dist-packages/webob/request.py, line 1281, in call_application
			app_iter = application(self.environ, start_response)
		File /usr/local/lib/python2.7/dist-packages/webob/dec.py, line 144, in __call__
			return resp(environ, start_response)
		File /usr/local/lib/python2.7/dist-packages/webob/dec.py, line 144, in __call__
			return resp(environ, start_response)
		File /usr/local/lib/python2.7/dist-packages/routes/middleware.py, line 136, in __call__
			response = self.app(environ, start_response)
		File /usr/local/lib/python2.7/dist-packages/webob/dec.py, line 144, in __call__
			return resp(environ, start_response)
		File /usr/local/lib/python2.7/dist-packages/webob/dec.py, line 130, in __call__
			resp = self.call_func(req, *args, **self.kwargs)
		File /usr/local/lib/python2.7/dist-packages/webob/dec.py, line 195, in call_func
			return self.func(req, *args, **kwargs)
		File /opt/stack/tacker/tacker/api/v1/resource.py, line 83, in resource
			result = method(request=request, **args)
		File /opt/stack/tacker/tacker/api/v1/base.py, line 395, in create
			obj = obj_creator(request.context, **kwargs)
		File /opt/stack/tacker/tacker/common/log.py, line 35, in wrapper
			return method(*args, **kwargs)
		File /opt/stack/tacker/tacker/nfvo/nfvo_plugin.py, line 175, in create_vnffgd
			self.validate_tosca(template['template']['vnffgd'])
		File /opt/stack/tacker/tacker/common/log.py, line 35, in wrapper
			return method(*args, **kwargs)
		File /opt/stack/tacker/tacker/nfvo/nfvo_plugin.py, line 163, in validate_tosca
			a_file=False, yaml_dict_tpl=template)
		File /usr/local/lib/python2.7/dist-packages/toscaparser/tosca_template.py, line 96, in __init__
			self.topology_template = self._topology_template()
		File /usr/local/lib/python2.7/dist-packages/toscaparser/tosca_template.py, line 111, in _topology_template
			self.parsed_params)
		File /usr/local/lib/python2.7/dist-packages/toscaparser/topology_template.py, line 58, in __init__
			self.groups = self._groups()
		File /usr/local/lib/python2.7/dist-packages/toscaparser/topology_template.py, line 141, in _groups
			self.custom_defs)
		File /usr/local/lib/python2.7/dist-packages/toscaparser/groups.py, line 29, in __init__
			custom_defs)
		File /usr/local/lib/python2.7/dist-packages/toscaparser/entity_template.py, line 74, in __init__
			if type is not None else None
		File /usr/local/lib/python2.7/dist-packages/toscaparser/elements/grouptype.py, line 33, in __init__
			self._validate_fields()
		File /usr/local/lib/python2.7/dist-packages/toscaparser/elements/grouptype.py, line 72, in _validate_fields
			{'status_code': 400}elf.grouptype, field=name))