Found that VNF Instance can be terminated and patched at the same time.
However,according to standard you cannot have two operations at the same time, and you should return 409
Here are the log:
terminate start：
2021-10-06 07:48:09.286 DEBUG tacker.conductor.conductor_server [req-56eb2eb7-0b4f-44d7-bb33-8e8a409053d9 nfv nfv_user] send_notification start notification[{'notificationType': 'VnfLcmOperationOccurrenceNotification', 'notificationStatus': 'START', 'operationState': 'STARTING', 'vnfInstanceId': 'c9f825fb-077d-4a21-9e8d-976a28b75041', 'operation': 'TERMINATE', 'isAutomaticInvocation': False, '_links': {'vnfInstance': {'href': 'http://172.22.39.3:9890/vnflcm/v1/vnf_instances/c9f825fb-077d-4a21-9e8d-976a28b75041'}, 'vnfLcmOpOcc': {'href': 'http://172.22.39.3:9890/vnflcm/v1/vnf_lcm_op_occs/c863d9ed-96c5-47ea-83fb-3e7d466abdbe'}}, 'vnfLcmOpOccId': 'c863d9ed-96c5-47ea-83fb-3e7d466abdbe'}] from (pid=11363) send_notification /opt/stack/tacker/tacker/conductor/conductor_server.py:1775
terminate end：
2021-10-06 07:50:05.876 DEBUG tacker.conductor.conductor_server [req-56eb2eb7-0b4f-44d7-bb33-8e8a409053d9 nfv nfv_user] send_notification start notification[{'notificationType': 'VnfLcmOperationOccurrenceNotification', 'notificationStatus': 'RESULT', 'operationState': 'COMPLETED', 'vnfInstanceId': 'c9f825fb-077d-4a21-9e8d-976a28b75041', 'operation': 'TERMINATE', 'isAutomaticInvocation': False, 'vnfLcmOpOccId': 'c863d9ed-96c5-47ea-83fb-3e7d466abdbe', '_links': {'vnfInstance': {'href': 'http://172.22.39.3:9890/vnflcm/v1/vnf_instances/c9f825fb-077d-4a21-9e8d-976a28b75041'}, 'vnfLcmOpOcc': {'href': 'http://172.22.39.3:9890/vnflcm/v1/vnf_lcm_op_occs/c863d9ed-96c5-47ea-83fb-3e7d466abdbe'}}, 'affectedVnfcs': [{'id': '13ff50f7-2bde-428c-8ac4-b1683d135207', 'vduId': 'masterNode', 'changeType': 'REMOVED', 'computeResource': {'vimConnectionId': '46c30192-5353-4b8c-a9b5-674d3328480d', 'resourceId': '3bd0ec30-e216-4ca1-9151-462c814094e8', 'vimLevelResourceType': 'OS::Nova::Server'}, 'metadata': {'stackId': 'b50224bb-c740-42a6-95c2-f990933d8d91'}, 'affectedVnfcCpIds': ['masterNode_CP1', '2c22eda8-93d6-4e24-a92e-a1529dee247d'], 'removedStorageResourceIds': []}], 'affectedVirtualLinks': [{'id': 'cc2260ca-38ad-453d-aef8-0bdb848d9e57', 'vnfVirtualLinkDescId': 'net0', 'changeType': 'REMOVED', 'networkResource': {'vimConnectionId': None, 'resourceId': '843fca04-93e3-4c5a-8444-c2eff3055986', 'vimLevelResourceType': 'OS::Neutron::Net'}, 'metadata': {}}], 'affectedVirtualStorages': [], 'changedExtConnectivity': []}] from (pid=11363) send_notification /opt/stack/tacker/tacker/conductor/conductor_server.py:1775
patch start：
2021-10-06 07:48:23.242 DEBUG tacker.conductor.conductor_server [req-076c000a-a9ea-4f01-a7f3-d2fdf3ccc169 nfv nfv_user] send_notification start notification[{'notificationType': 'VnfLcmOperationOccurrenceNotification', 'notificationStatus': 'START', 'operationState': 'PROCESSING', 'vnfInstanceId': 'c9f825fb-077d-4a21-9e8d-976a28b75041', 'operation': 'MODIFY_INFO', 'isAutomaticInvocation': False, 'vnfLcmOpOccId': '650f479c-db27-4ab5-a302-e167f23140c7', '_links': {'vnfInstance': {'href': 'http://172.22.39.3:9890/vnflcm/v1/vnf_instances/c9f825fb-077d-4a21-9e8d-976a28b75041'}, 'vnfLcmOpOcc': {'href': 'http://172.22.39.3:9890/vnflcm/v1/vnf_lcm_op_occs/650f479c-db27-4ab5-a302-e167f23140c7'}}}] from (pid=11363) send_notification /opt/stack/tacker/tacker/conductor/conductor_server.py:1775
patch end：
2021-10-06 07:49:56.288 DEBUG tacker.conductor.conductor_server [req-076c000a-a9ea-4f01-a7f3-d2fdf3ccc169 nfv nfv_user] send_notification start notification[{'notificationType': 'VnfLcmOperationOccurrenceNotification', 'notificationStatus': 'RESULT', 'operationState': 'COMPLETED', 'vnfInstanceId': 'c9f825fb-077d-4a21-9e8d-976a28b75041', 'operation': 'MODIFY_INFO', 'isAutomaticInvocation': False, 'vnfLcmOpOccId': '650f479c-db27-4ab5-a302-e167f23140c7', '_links': {'vnfInstance': {'href': 'http://172.22.39.3:9890/vnflcm/v1/vnf_instances/c9f825fb-077d-4a21-9e8d-976a28b75041'}, 'vnfLcmOpOcc': {'href': 'http://172.22.39.3:9890/vnflcm/v1/vnf_lcm_op_occs/650f479c-db27-4ab5-a302-e167f23140c7'}}, 'changed_info': {}}] from (pid=11363) send_notification /opt/stack/tacker/tacker/conductor/conductor_server.py:1775
