-ACTIVITY_CHANGE_NF_STATE = "change_nf_state"
-ACTIVITY_CHANGE_NF_INSTANTIATION_STATE = "change_nf_instantiation_state"
-ACTIVITY_CHANGE_NF_NOTIFICATION_STATE = "change_nf_notification_state"
+ACTIVITY_CHANGE_VNF_STATE = "change-vnf-state"
+ACTIVITY_CHANGE_VNF_INSTANTIATION_STATE = "change-vnf-instantiation-state"
+ACTIVITY_SEND_NOTIFICATION_FOR_VNF = "send-notification-for-vnf"