diff --git a/go.mod b/go.mod
index 10d32db..8b6619f 100644
--- a/go.mod
+++ b/go.mod
@@ -6,8 +6,8 @@
 	github.com/gogo/protobuf v1.3.0
 	github.com/golang/protobuf v1.3.2
 	github.com/google/uuid v1.1.1
-	github.com/opencord/voltha-lib-go/v3 v3.0.7
-	github.com/opencord/voltha-protos/v3 v3.2.2
+	github.com/opencord/voltha-lib-go/v3 v3.0.10
+	github.com/opencord/voltha-protos/v3 v3.2.3
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/stretchr/testify v1.4.0
 	google.golang.org/grpc v1.24.0
diff --git a/go.sum b/go.sum
index 7c9567a..8d4cd1e 100644
--- a/go.sum
+++ b/go.sum
@@ -190,12 +190,10 @@
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/gomega v1.4.2 h1:3mYCb7aPxS/RU7TI1y4rkEn1oKmPRjNJLNEXgw7MH2I=
 github.com/onsi/gomega v1.4.2/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
-github.com/opencord/voltha-lib-go/v3 v3.0.7 h1:o0Oujm9rkNWrTCkmTiJyHRxBGzCYhjfElN2IOzif8v4=
-github.com/opencord/voltha-lib-go/v3 v3.0.7/go.mod h1:l/AgBlYqXEiHLHS6NR654Q7m5BfX5YVnrpykf7kOmGw=
-github.com/opencord/voltha-protos/v3 v3.2.1 h1:5CAxtWzHqDMNItBRklDkXN5YwE9b6vuCXr5UKTAuJBg=
-github.com/opencord/voltha-protos/v3 v3.2.1/go.mod h1:RIGHt7b80BHpHh3ceodknh0DxUjUHCWSbYbZqRx7Og0=
-github.com/opencord/voltha-protos/v3 v3.2.2 h1:Fdg2T6xtUjVZPBWV636/mMH6lYggalQ2e7uFPoOhZDc=
-github.com/opencord/voltha-protos/v3 v3.2.2/go.mod h1:RIGHt7b80BHpHh3ceodknh0DxUjUHCWSbYbZqRx7Og0=
+github.com/opencord/voltha-lib-go/v3 v3.0.10 h1:y735YI2Pc4uKPGPoHWAtSqiiSkoAM2IYJcthcPkKolw=
+github.com/opencord/voltha-lib-go/v3 v3.0.10/go.mod h1:69Y+rVd25Nq2SUeoY7Q1BXtwrcUPllG0erhq+aK8Qec=
+github.com/opencord/voltha-protos/v3 v3.2.3 h1:Wv73mw1Ye0bCfyhOk5svgrlE2tLizHq6tQluoDq9Vg8=
+github.com/opencord/voltha-protos/v3 v3.2.3/go.mod h1:RIGHt7b80BHpHh3ceodknh0DxUjUHCWSbYbZqRx7Og0=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
 github.com/pascaldekloe/goe v0.1.0 h1:cBOtyMzM9HTpWjXfbbunk26uA6nG3a8n06Wieeh0MwY=
 github.com/pascaldekloe/goe v0.1.0/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
diff --git a/rw_core/core/adapter_proxy.go b/rw_core/core/adapter_proxy.go
index b7798ad..999dec4 100755
--- a/rw_core/core/adapter_proxy.go
+++ b/rw_core/core/adapter_proxy.go
@@ -612,3 +612,33 @@
 	log.Debugw("enablePort-response", log.Fields{"device-id": device.Id, "port-no": port.PortNo, "success": success})
 	return unPackResponse(rpc, device.Id, success, result)
 }
+
+// ChildDeviceLost invokes Child device_lost rpc
+func (ap *AdapterProxy) ChildDeviceLost(ctx context.Context, deviceType string, pDeviceID string, pPortNo uint32, onuID uint32) error {
+	log.Debugw("ChildDeviceLost", log.Fields{"pDeviceId": pDeviceID, "pPortNo": pPortNo, "onuID": onuID})
+	rpc := "child_device_lost"
+	toTopic := ap.getAdapterTopic(deviceType)
+	dID := &ic.StrType{Val: pDeviceID}
+	PortNo := &ic.IntType{Val: int64(pPortNo)}
+	oID := &ic.IntType{Val: int64(onuID)}
+	args := []*kafka.KVArg{
+		&kafka.KVArg{
+			Key:   "pDeviceId",
+			Value: dID,
+		},
+		&kafka.KVArg{
+			Key:   "pPortNo",
+			Value: PortNo,
+		},
+		&kafka.KVArg{
+			Key:   "onuID",
+			Value: oID,
+		}}
+
+	// Use a device specific topic as we are the only core handling requests for this device
+	replyToTopic := ap.getCoreTopic()
+	success, result := ap.kafkaICProxy.InvokeRPC(ctx, rpc, &toTopic, &replyToTopic, true, pDeviceID, args...)
+	log.Debugw("ChildDeviceLost-response", log.Fields{"pDeviceId": pDeviceID, "success": success})
+
+	return unPackResponse(rpc, pDeviceID, success, result)
+}
diff --git a/rw_core/core/device_agent.go b/rw_core/core/device_agent.go
index d20874a..22ca6ca 100755
--- a/rw_core/core/device_agent.go
+++ b/rw_core/core/device_agent.go
@@ -705,35 +705,19 @@
 		log.Debugw("device-already-in-deleted-state", log.Fields{"id": agent.deviceID})
 		return nil
 	}
-	if (cloned.AdminState != voltha.AdminState_DISABLED) &&
-		(cloned.AdminState != voltha.AdminState_PREPROVISIONED) {
-		log.Debugw("device-not-disabled", log.Fields{"id": agent.deviceID})
-		//TODO:  Needs customized error message
-		return status.Errorf(codes.FailedPrecondition, "deviceId:%s, expected-admin-state:%s", agent.deviceID, voltha.AdminState_DISABLED)
-	}
 	if cloned.AdminState != voltha.AdminState_PREPROVISIONED {
-		// Send the request to an Adapter only if the device is not in poreporovision state and wait for a response
 		if err := agent.adapterProxy.DeleteDevice(ctx, cloned); err != nil {
 			log.Debugw("deleteDevice-error", log.Fields{"id": agent.deviceID, "error": err})
 			return err
 		}
 	}
-	//	Set the state to deleted after we receive an Ack - this will trigger some background process to clean up
-	//	the device as well as its association with the logical device
+	//Set the state to deleted - this will trigger some background process to invoke parent adapter to delete child
+	//device and clean up the device as well as its association with the logical device
 	cloned.AdminState = voltha.AdminState_DELETED
+
 	if err := agent.updateDeviceInStoreWithoutLock(ctx, cloned, false, ""); err != nil {
 		return err
 	}
-	//	If this is a child device then remove the associated peer ports on the parent device
-	if !cloned.Root {
-		go func() {
-			// since the caller does not wait for this for complete, use background context
-			err := agent.deviceMgr.deletePeerPorts(context.Background(), cloned.ParentId, cloned.Id)
-			if err != nil {
-				log.Errorw("unable-to-delete-peer-ports", log.Fields{"error": err})
-			}
-		}()
-	}
 	return nil
 }
 
@@ -1296,8 +1280,6 @@
 }
 
 func (agent *DeviceAgent) deletePeerPorts(ctx context.Context, deviceID string) error {
-	agent.lockDevice.Lock()
-	defer agent.lockDevice.Unlock()
 	log.Debug("deletePeerPorts")
 
 	cloned := agent.getDeviceWithoutLock()
@@ -1466,3 +1448,21 @@
 	}
 	return nil
 }
+
+func (agent *DeviceAgent) ChildDeviceLost(ctx context.Context, device *voltha.Device) error {
+
+	agent.lockDevice.Lock()
+	defer agent.lockDevice.Unlock()
+	log.Debugw("ChildDeviceLost", log.Fields{"id": device.Id})
+
+	//Remove the associated peer ports on the parent device
+	if err := agent.deviceMgr.deletePeerPorts(ctx, device.ParentId, device.Id); err != nil {
+		return err
+	}
+
+	if err := agent.adapterProxy.ChildDeviceLost(ctx, agent.deviceType, agent.deviceID, device.ParentPortNo, device.ProxyAddress.OnuId); err != nil {
+		return err
+	}
+	return nil
+
+}
diff --git a/rw_core/core/device_manager.go b/rw_core/core/device_manager.go
index df94772..950819e 100755
--- a/rw_core/core/device_manager.go
+++ b/rw_core/core/device_manager.go
@@ -1509,3 +1509,12 @@
 
 	sendResponse(ctx, ch, res)
 }
+
+// ChildDeviceLost  calls parent adapter to delete child device and all its references
+func (dMgr *DeviceManager) ChildDeviceLost(ctx context.Context, cDevice *voltha.Device) error {
+	log.Debugw("ChildDeviceLost", log.Fields{"deviceid": cDevice.Id})
+	if parentAgent := dMgr.getDeviceAgent(ctx, cDevice.ParentId); parentAgent != nil {
+		return parentAgent.ChildDeviceLost(ctx, cDevice)
+	}
+	return status.Errorf(codes.NotFound, "%s", cDevice.Id)
+}
diff --git a/rw_core/core/device_state_transitions.go b/rw_core/core/device_state_transitions.go
index 7756bf4..0a6264b 100644
--- a/rw_core/core/device_state_transitions.go
+++ b/rw_core/core/device_state_transitions.go
@@ -96,7 +96,13 @@
 			deviceType:    child,
 			previousState: DeviceState{Admin: voltha.AdminState_DISABLED, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN},
 			currentState:  DeviceState{Admin: voltha.AdminState_DELETED, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN},
-			handlers:      []TransitionHandler{dMgr.DeleteLogicalPorts, dMgr.RunPostDeviceDelete}})
+			handlers:      []TransitionHandler{dMgr.ChildDeviceLost, dMgr.DeleteLogicalPorts, dMgr.RunPostDeviceDelete}})
+	transitionMap.transitions = append(transitionMap.transitions,
+		Transition{
+			deviceType:    child,
+			previousState: DeviceState{Admin: voltha.AdminState_ENABLED, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN},
+			currentState:  DeviceState{Admin: voltha.AdminState_DELETED, Connection: voltha.ConnectStatus_UNKNOWN, Operational: voltha.OperStatus_UNKNOWN},
+			handlers:      []TransitionHandler{dMgr.ChildDeviceLost, dMgr.DeleteLogicalPorts, dMgr.RunPostDeviceDelete}})
 	transitionMap.transitions = append(transitionMap.transitions,
 		Transition{
 			deviceType:    any,
diff --git a/rw_core/core/device_state_transitions_test.go b/rw_core/core/device_state_transitions_test.go
index 7894378..4df728f 100644
--- a/rw_core/core/device_state_transitions_test.go
+++ b/rw_core/core/device_state_transitions_test.go
@@ -199,23 +199,50 @@
 	from = getDevice(false, voltha.AdminState_DISABLED, voltha.ConnectStatus_UNKNOWN, voltha.OperStatus_UNKNOWN)
 	to = getDevice(false, voltha.AdminState_DELETED, voltha.ConnectStatus_UNKNOWN, voltha.OperStatus_UNKNOWN)
 	handlers = transitionMap.GetTransitionHandler(from, to)
-	assert.Equal(t, 2, len(handlers))
-	assert.True(t, reflect.ValueOf(tdm.DeleteLogicalPorts).Pointer() == reflect.ValueOf(handlers[0]).Pointer())
-	assert.True(t, reflect.ValueOf(tdm.RunPostDeviceDelete).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
+	assert.Equal(t, 3, len(handlers))
+	assert.True(t, reflect.ValueOf(tdm.ChildDeviceLost).Pointer() == reflect.ValueOf(handlers[0]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.DeleteLogicalPorts).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.RunPostDeviceDelete).Pointer() == reflect.ValueOf(handlers[2]).Pointer())
 
 	from = getDevice(false, voltha.AdminState_DISABLED, voltha.ConnectStatus_REACHABLE, voltha.OperStatus_UNKNOWN)
 	to = getDevice(false, voltha.AdminState_DELETED, voltha.ConnectStatus_UNREACHABLE, voltha.OperStatus_UNKNOWN)
 	handlers = transitionMap.GetTransitionHandler(from, to)
-	assert.Equal(t, 2, len(handlers))
-	assert.True(t, reflect.ValueOf(tdm.DeleteLogicalPorts).Pointer() == reflect.ValueOf(handlers[0]).Pointer())
-	assert.True(t, reflect.ValueOf(tdm.RunPostDeviceDelete).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
+	assert.Equal(t, 3, len(handlers))
+	assert.True(t, reflect.ValueOf(tdm.ChildDeviceLost).Pointer() == reflect.ValueOf(handlers[0]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.DeleteLogicalPorts).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.RunPostDeviceDelete).Pointer() == reflect.ValueOf(handlers[2]).Pointer())
 
 	from = getDevice(false, voltha.AdminState_DISABLED, voltha.ConnectStatus_UNKNOWN, voltha.OperStatus_ACTIVE)
 	to = getDevice(false, voltha.AdminState_DELETED, voltha.ConnectStatus_UNKNOWN, voltha.OperStatus_FAILED)
 	handlers = transitionMap.GetTransitionHandler(from, to)
-	assert.Equal(t, 2, len(handlers))
-	assert.True(t, reflect.ValueOf(tdm.DeleteLogicalPorts).Pointer() == reflect.ValueOf(handlers[0]).Pointer())
-	assert.True(t, reflect.ValueOf(tdm.RunPostDeviceDelete).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
+	assert.Equal(t, 3, len(handlers))
+	assert.True(t, reflect.ValueOf(tdm.ChildDeviceLost).Pointer() == reflect.ValueOf(handlers[0]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.DeleteLogicalPorts).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.RunPostDeviceDelete).Pointer() == reflect.ValueOf(handlers[2]).Pointer())
+
+	from = getDevice(false, voltha.AdminState_ENABLED, voltha.ConnectStatus_UNKNOWN, voltha.OperStatus_UNKNOWN)
+	to = getDevice(false, voltha.AdminState_DELETED, voltha.ConnectStatus_UNKNOWN, voltha.OperStatus_UNKNOWN)
+	handlers = transitionMap.GetTransitionHandler(from, to)
+	assert.Equal(t, 3, len(handlers))
+	assert.True(t, reflect.ValueOf(tdm.ChildDeviceLost).Pointer() == reflect.ValueOf(handlers[0]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.DeleteLogicalPorts).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.RunPostDeviceDelete).Pointer() == reflect.ValueOf(handlers[2]).Pointer())
+
+	from = getDevice(false, voltha.AdminState_ENABLED, voltha.ConnectStatus_REACHABLE, voltha.OperStatus_UNKNOWN)
+	to = getDevice(false, voltha.AdminState_DELETED, voltha.ConnectStatus_UNREACHABLE, voltha.OperStatus_UNKNOWN)
+	handlers = transitionMap.GetTransitionHandler(from, to)
+	assert.Equal(t, 3, len(handlers))
+	assert.True(t, reflect.ValueOf(tdm.ChildDeviceLost).Pointer() == reflect.ValueOf(handlers[0]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.DeleteLogicalPorts).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.RunPostDeviceDelete).Pointer() == reflect.ValueOf(handlers[2]).Pointer())
+
+	from = getDevice(false, voltha.AdminState_ENABLED, voltha.ConnectStatus_UNKNOWN, voltha.OperStatus_ACTIVE)
+	to = getDevice(false, voltha.AdminState_DELETED, voltha.ConnectStatus_UNKNOWN, voltha.OperStatus_FAILED)
+	handlers = transitionMap.GetTransitionHandler(from, to)
+	assert.Equal(t, 3, len(handlers))
+	assert.True(t, reflect.ValueOf(tdm.ChildDeviceLost).Pointer() == reflect.ValueOf(handlers[0]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.DeleteLogicalPorts).Pointer() == reflect.ValueOf(handlers[1]).Pointer())
+	assert.True(t, reflect.ValueOf(tdm.RunPostDeviceDelete).Pointer() == reflect.ValueOf(handlers[2]).Pointer())
 }
 
 func TestInvalidTransitions(t *testing.T) {
diff --git a/rw_core/coreif/device_manager_if.go b/rw_core/coreif/device_manager_if.go
index b4329be..7a9e64d 100644
--- a/rw_core/coreif/device_manager_if.go
+++ b/rw_core/coreif/device_manager_if.go
@@ -38,4 +38,5 @@
 	DeleteLogicalPorts(context.Context, *voltha.Device) error
 	DeleteAllChildDevices(context.Context, *voltha.Device) error
 	RunPostDeviceDelete(context.Context, *voltha.Device) error
+	ChildDeviceLost(context.Context, *voltha.Device) error
 }
diff --git a/rw_core/mocks/adapter.go b/rw_core/mocks/adapter.go
index 28d06da..63474ef 100644
--- a/rw_core/mocks/adapter.go
+++ b/rw_core/mocks/adapter.go
@@ -249,3 +249,8 @@
 func (ta *Adapter) Disable_port(deviceId string, port *voltha.Port) error { //nolint
 	return nil
 }
+
+// Child_device_lost -
+func (ta *Adapter) Child_device_lost(pDeviceID string, pPortNo uint32, onuID uint32) error { //nolint
+	return nil
+}
diff --git a/rw_core/mocks/adapter_olt.go b/rw_core/mocks/adapter_olt.go
index b9cef0c..2ab98a3 100644
--- a/rw_core/mocks/adapter_olt.go
+++ b/rw_core/mocks/adapter_olt.go
@@ -256,3 +256,8 @@
 	}()
 	return nil
 }
+
+// Child_device_lost deletes ONU and its references
+func (oltA *OLTAdapter) Child_device_lost(deviceID string, pPortNo uint32, onuID uint32) error { // nolint
+	return nil
+}
diff --git a/rw_core/mocks/device_manager.go b/rw_core/mocks/device_manager.go
index 116c7dc..6edfdc9 100644
--- a/rw_core/mocks/device_manager.go
+++ b/rw_core/mocks/device_manager.go
@@ -176,3 +176,8 @@
 func (dm *DeviceManager) ProcessTransition(previous *voltha.Device, current *voltha.Device) error {
 	return nil
 }
+
+// ChildDeviceLost -
+func (dm *DeviceManager) ChildDeviceLost(ctx context.Context, cDevice *voltha.Device) error {
+	return nil
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/core_proxy.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/core_proxy.go
index c5e1c14..7cb933d 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/core_proxy.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/core_proxy.go
@@ -284,7 +284,7 @@
 		volthaDevice := &voltha.Device{}
 		if err := ptypes.UnmarshalAny(result, volthaDevice); err != nil {
 			logger.Warnw("cannot-unmarshal-response", log.Fields{"error": err})
-			return nil, status.Errorf(codes.InvalidArgument, "%s", err.Error())
+			return nil, status.Error(codes.InvalidArgument, err.Error())
 		}
 		return volthaDevice, nil
 	} else {
@@ -294,8 +294,8 @@
 			logger.Warnw("cannot-unmarshal-response", log.Fields{"error": err})
 		}
 		logger.Debugw("ChildDeviceDetected-return", log.Fields{"deviceid": parentDeviceId, "success": success, "error": err})
-		// TODO: Need to get the real error code
-		return nil, status.Errorf(codes.Internal, "%s", unpackResult.Reason)
+
+		return nil, status.Error(ICProxyErrorCodeToGrpcErrorCode(unpackResult.Code), unpackResult.Reason)
 	}
 
 }
@@ -361,7 +361,7 @@
 		volthaDevice := &voltha.Device{}
 		if err := ptypes.UnmarshalAny(result, volthaDevice); err != nil {
 			logger.Warnw("cannot-unmarshal-response", log.Fields{"error": err})
-			return nil, status.Errorf(codes.InvalidArgument, "%s", err.Error())
+			return nil, status.Error(codes.InvalidArgument, err.Error())
 		}
 		return volthaDevice, nil
 	} else {
@@ -372,7 +372,7 @@
 		}
 		logger.Debugw("GetDevice-return", log.Fields{"deviceid": parentDeviceId, "success": success, "error": err})
 		// TODO:  Need to get the real error code
-		return nil, status.Errorf(codes.Internal, "%s", unpackResult.Reason)
+		return nil, status.Error(ICProxyErrorCodeToGrpcErrorCode(unpackResult.Code), unpackResult.Reason)
 	}
 }
 
@@ -421,7 +421,7 @@
 		volthaDevice := &voltha.Device{}
 		if err := ptypes.UnmarshalAny(result, volthaDevice); err != nil {
 			logger.Warnw("cannot-unmarshal-response", log.Fields{"error": err})
-			return nil, status.Errorf(codes.InvalidArgument, "%s", err.Error())
+			return nil, status.Error(codes.InvalidArgument, err.Error())
 		}
 		return volthaDevice, nil
 	} else {
@@ -432,13 +432,7 @@
 		}
 		logger.Debugw("GetChildDevice-return", log.Fields{"deviceid": parentDeviceId, "success": success, "error": err})
 
-		code := codes.Internal
-
-		if unpackResult.Code == ic.ErrorCode_DEADLINE_EXCEEDED {
-			code = codes.DeadlineExceeded
-		}
-
-		return nil, status.Errorf(code, "%s", unpackResult.Reason)
+		return nil, status.Error(ICProxyErrorCodeToGrpcErrorCode(unpackResult.Code), unpackResult.Reason)
 	}
 }
 
@@ -463,7 +457,7 @@
 		volthaDevices := &voltha.Devices{}
 		if err := ptypes.UnmarshalAny(result, volthaDevices); err != nil {
 			logger.Warnw("cannot-unmarshal-response", log.Fields{"error": err})
-			return nil, status.Errorf(codes.InvalidArgument, "%s", err.Error())
+			return nil, status.Error(codes.InvalidArgument, err.Error())
 		}
 		return volthaDevices, nil
 	} else {
@@ -474,13 +468,7 @@
 		}
 		logger.Debugw("GetChildDevices-return", log.Fields{"deviceid": parentDeviceId, "success": success, "error": err})
 
-		code := codes.Internal
-
-		if unpackResult.Code == ic.ErrorCode_DEADLINE_EXCEEDED {
-			code = codes.DeadlineExceeded
-		}
-
-		return nil, status.Errorf(code, "%s", unpackResult.Reason)
+		return nil, status.Error(ICProxyErrorCodeToGrpcErrorCode(unpackResult.Code), unpackResult.Reason)
 	}
 }
 
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/events_proxy.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/events_proxy.go
index 034de8e..da9c9eb 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/events_proxy.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/events_proxy.go
@@ -23,6 +23,7 @@
 	"strings"
 	"time"
 
+	"github.com/golang/protobuf/ptypes"
 	"github.com/opencord/voltha-lib-go/v3/pkg/adapters/adapterif"
 	"github.com/opencord/voltha-lib-go/v3/pkg/kafka"
 	"github.com/opencord/voltha-lib-go/v3/pkg/log"
@@ -60,7 +61,11 @@
 	return fmt.Sprintf("Voltha.openolt.%s.%s", eventName, strconv.FormatInt(time.Now().UnixNano(), 10))
 }
 
-func (ep *EventProxy) getEventHeader(eventName string, category adapterif.EventCategory, subCategory adapterif.EventSubCategory, eventType adapterif.EventType, raisedTs int64) *voltha.EventHeader {
+func (ep *EventProxy) getEventHeader(eventName string,
+	category adapterif.EventCategory,
+	subCategory adapterif.EventSubCategory,
+	eventType adapterif.EventType,
+	raisedTs int64) (*voltha.EventHeader, error) {
 	var header voltha.EventHeader
 	if strings.Contains(eventName, "_") {
 		eventName = strings.Join(strings.Split(eventName, "_")[:len(strings.Split(eventName, "_"))-2], "_")
@@ -73,9 +78,21 @@
 	header.SubCategory = subCategory
 	header.Type = eventType
 	header.TypeVersion = adapterif.EventTypeVersion
-	header.RaisedTs = float32(raisedTs)
-	header.ReportedTs = float32(time.Now().UnixNano())
-	return &header
+
+	// raisedTs is in nanoseconds
+	timestamp, err := ptypes.TimestampProto(time.Unix(0, raisedTs))
+	if err != nil {
+		return nil, err
+	}
+	header.RaisedTs = timestamp
+
+	timestamp, err = ptypes.TimestampProto(time.Now())
+	if err != nil {
+		return nil, err
+	}
+	header.ReportedTs = timestamp
+
+	return &header, nil
 }
 
 /* Send out device events*/
@@ -86,8 +103,11 @@
 	}
 	var event voltha.Event
 	var de voltha.Event_DeviceEvent
+	var err error
 	de.DeviceEvent = deviceEvent
-	event.Header = ep.getEventHeader(deviceEvent.DeviceEventName, category, subCategory, voltha.EventType_DEVICE_EVENT, raisedTs)
+	if event.Header, err = ep.getEventHeader(deviceEvent.DeviceEventName, category, subCategory, voltha.EventType_DEVICE_EVENT, raisedTs); err != nil {
+		return err
+	}
 	event.EventType = &de
 	if err := ep.sendEvent(&event); err != nil {
 		logger.Errorw("Failed to send device event to KAFKA bus", log.Fields{"device-event": deviceEvent})
@@ -110,8 +130,11 @@
 	}
 	var event voltha.Event
 	var de voltha.Event_KpiEvent2
+	var err error
 	de.KpiEvent2 = kpiEvent
-	event.Header = ep.getEventHeader(id, category, subCategory, voltha.EventType_KPI_EVENT2, raisedTs)
+	if event.Header, err = ep.getEventHeader(id, category, subCategory, voltha.EventType_KPI_EVENT2, raisedTs); err != nil {
+		return err
+	}
 	event.EventType = &de
 	if err := ep.sendEvent(&event); err != nil {
 		logger.Errorw("Failed to send kpi event to KAFKA bus", log.Fields{"device-event": kpiEvent})
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/request_handler.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/request_handler.go
index 78b8eb5..5b00887 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/request_handler.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/request_handler.go
@@ -658,3 +658,46 @@
 	}
 	return deviceId.Val, port, nil
 }
+
+func (rhp *RequestHandlerProxy) Child_device_lost(args []*ic.Argument) error {
+	if len(args) < 4 {
+		logger.Warn("invalid-number-of-args", log.Fields{"args": args})
+		return errors.New("invalid-number-of-args")
+	}
+
+	pDeviceId := &ic.StrType{}
+	pPortNo := &ic.IntType{}
+	onuID := &ic.IntType{}
+	fromTopic := &ic.StrType{}
+	for _, arg := range args {
+		switch arg.Key {
+		case "pDeviceId":
+			if err := ptypes.UnmarshalAny(arg.Value, pDeviceId); err != nil {
+				logger.Warnw("cannot-unmarshal-parent-deviceId", log.Fields{"error": err})
+				return err
+			}
+		case "pPortNo":
+			if err := ptypes.UnmarshalAny(arg.Value, pPortNo); err != nil {
+				logger.Warnw("cannot-unmarshal-port", log.Fields{"error": err})
+				return err
+			}
+		case "onuID":
+			if err := ptypes.UnmarshalAny(arg.Value, onuID); err != nil {
+				logger.Warnw("cannot-unmarshal-transaction-ID", log.Fields{"error": err})
+				return err
+			}
+		case kafka.FromTopic:
+			if err := ptypes.UnmarshalAny(arg.Value, fromTopic); err != nil {
+				logger.Warnw("cannot-unmarshal-from-topic", log.Fields{"error": err})
+				return err
+			}
+		}
+	}
+	//Update the core reference for that device
+	rhp.coreProxy.UpdateCoreReference(pDeviceId.Val, fromTopic.Val)
+	//Invoke the Child_device_lost API on the adapter
+	if err := rhp.adapter.Child_device_lost(pDeviceId.Val, uint32(pPortNo.Val), uint32(onuID.Val)); err != nil {
+		return status.Errorf(codes.NotFound, "%s", err.Error())
+	}
+	return nil
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/utils.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/utils.go
index d3c562a..b782ebe 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/utils.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/utils.go
@@ -17,6 +17,9 @@
 
 import (
 	"fmt"
+	"github.com/opencord/voltha-lib-go/v3/pkg/log"
+	ic "github.com/opencord/voltha-protos/v3/go/inter_container"
+	"google.golang.org/grpc/codes"
 	"math/rand"
 	"time"
 )
@@ -71,3 +74,17 @@
 	}
 	return string(b)
 }
+
+func ICProxyErrorCodeToGrpcErrorCode(icErr ic.ErrorCodeCodes) codes.Code {
+	switch icErr {
+	case ic.ErrorCode_INVALID_PARAMETERS:
+		return codes.InvalidArgument
+	case ic.ErrorCode_UNSUPPORTED_REQUEST:
+		return codes.Unavailable
+	case ic.ErrorCode_DEADLINE_EXCEEDED:
+		return codes.DeadlineExceeded
+	default:
+		log.Warnw("cannnot-map-ic-error-code-to-grpc-error-code", log.Fields{"err": icErr})
+		return codes.Internal
+	}
+}
diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/iAdapter.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/iAdapter.go
index c0e44be..fc57247 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/iAdapter.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/iAdapter.go
@@ -51,4 +51,5 @@
 	Revert_image_update(device *voltha.Device, request *voltha.ImageDownload) (*voltha.ImageDownload, error)
 	Enable_port(deviceId string, port *voltha.Port) error
 	Disable_port(deviceId string, port *voltha.Port) error
+	Child_device_lost(parentDeviceId string, parentPortNo uint32, onuID uint32) error
 }
diff --git a/vendor/github.com/opencord/voltha-protos/v3/go/voltha/events.pb.go b/vendor/github.com/opencord/voltha-protos/v3/go/voltha/events.pb.go
index 7df3e27..7f6a921 100644
--- a/vendor/github.com/opencord/voltha-protos/v3/go/voltha/events.pb.go
+++ b/vendor/github.com/opencord/voltha-protos/v3/go/voltha/events.pb.go
@@ -6,6 +6,7 @@
 import (
 	fmt "fmt"
 	proto "github.com/golang/protobuf/proto"
+	timestamp "github.com/golang/protobuf/ptypes/timestamp"
 	_ "github.com/opencord/voltha-protos/v3/go/common"
 	_ "google.golang.org/genproto/googleapis/api/annotations"
 	math "math"
@@ -876,11 +877,13 @@
 	// Overall impact of the alarm on the system
 	Severity AlarmEventSeverity_Types `protobuf:"varint,5,opt,name=severity,proto3,enum=voltha.AlarmEventSeverity_Types" json:"severity,omitempty"`
 	// Timestamp at which the alarm was first raised
-	RaisedTs float32 `protobuf:"fixed32,6,opt,name=raised_ts,json=raisedTs,proto3" json:"raised_ts,omitempty"`
+	// TODO: Is this obsolete? Eventheader already has a raised_ts
+	RaisedTs *timestamp.Timestamp `protobuf:"bytes,6,opt,name=raised_ts,json=raisedTs,proto3" json:"raised_ts,omitempty"`
 	// Timestamp at which the alarm was reported
-	ReportedTs float32 `protobuf:"fixed32,7,opt,name=reported_ts,json=reportedTs,proto3" json:"reported_ts,omitempty"`
+	// TODO: Is this obsolete? Eventheader already has a reported_ts
+	ReportedTs *timestamp.Timestamp `protobuf:"bytes,7,opt,name=reported_ts,json=reportedTs,proto3" json:"reported_ts,omitempty"`
 	// Timestamp at which the alarm has changed since it was raised
-	ChangedTs float32 `protobuf:"fixed32,8,opt,name=changed_ts,json=changedTs,proto3" json:"changed_ts,omitempty"`
+	ChangedTs *timestamp.Timestamp `protobuf:"bytes,8,opt,name=changed_ts,json=changedTs,proto3" json:"changed_ts,omitempty"`
 	// Identifier of the originating resource of the alarm
 	ResourceId string `protobuf:"bytes,9,opt,name=resource_id,json=resourceId,proto3" json:"resource_id,omitempty"`
 	// Textual explanation of the alarm
@@ -956,25 +959,25 @@
 	return AlarmEventSeverity_INDETERMINATE
 }
 
-func (m *AlarmEvent) GetRaisedTs() float32 {
+func (m *AlarmEvent) GetRaisedTs() *timestamp.Timestamp {
 	if m != nil {
 		return m.RaisedTs
 	}
-	return 0
+	return nil
 }
 
-func (m *AlarmEvent) GetReportedTs() float32 {
+func (m *AlarmEvent) GetReportedTs() *timestamp.Timestamp {
 	if m != nil {
 		return m.ReportedTs
 	}
-	return 0
+	return nil
 }
 
-func (m *AlarmEvent) GetChangedTs() float32 {
+func (m *AlarmEvent) GetChangedTs() *timestamp.Timestamp {
 	if m != nil {
 		return m.ChangedTs
 	}
-	return 0
+	return nil
 }
 
 func (m *AlarmEvent) GetResourceId() string {
@@ -1201,16 +1204,16 @@
 	// the event was first raised from the source entity.
 	// If the source entity doesn't send the raised_ts, this shall be set
 	// to timestamp when the event was received.
-	RaisedTs float32 `protobuf:"fixed32,6,opt,name=raised_ts,json=raisedTs,proto3" json:"raised_ts,omitempty"`
+	RaisedTs *timestamp.Timestamp `protobuf:"bytes,6,opt,name=raised_ts,json=raisedTs,proto3" json:"raised_ts,omitempty"`
 	// Timestamp at which the event was reported.
 	// This represents the UTC time stamp since epoch (in seconds) when the
 	// the event was reported (this time stamp is >= raised_ts).
 	// If the source entity that reported this event doesn't send the
 	// reported_ts, this shall be set to the same value as raised_ts.
-	ReportedTs           float32  `protobuf:"fixed32,7,opt,name=reported_ts,json=reportedTs,proto3" json:"reported_ts,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
+	ReportedTs           *timestamp.Timestamp `protobuf:"bytes,7,opt,name=reported_ts,json=reportedTs,proto3" json:"reported_ts,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}             `json:"-"`
+	XXX_unrecognized     []byte               `json:"-"`
+	XXX_sizecache        int32                `json:"-"`
 }
 
 func (m *EventHeader) Reset()         { *m = EventHeader{} }
@@ -1273,18 +1276,18 @@
 	return ""
 }
 
-func (m *EventHeader) GetRaisedTs() float32 {
+func (m *EventHeader) GetRaisedTs() *timestamp.Timestamp {
 	if m != nil {
 		return m.RaisedTs
 	}
-	return 0
+	return nil
 }
 
-func (m *EventHeader) GetReportedTs() float32 {
+func (m *EventHeader) GetReportedTs() *timestamp.Timestamp {
 	if m != nil {
 		return m.ReportedTs
 	}
-	return 0
+	return nil
 }
 
 //
@@ -1450,89 +1453,91 @@
 func init() { proto.RegisterFile("voltha_protos/events.proto", fileDescriptor_e63e6c07044fd2c4) }
 
 var fileDescriptor_e63e6c07044fd2c4 = []byte{
-	// 1334 bytes of a gzipped FileDescriptorProto
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+	0x4f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x08, 0xad, 0xf2, 0x6f, 0x2b, 0x0e, 0x00, 0x00,
 }
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 354f814..3f13bd3 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -96,7 +96,7 @@
 github.com/modern-go/concurrent
 # github.com/modern-go/reflect2 v1.0.1
 github.com/modern-go/reflect2
-# github.com/opencord/voltha-lib-go/v3 v3.0.7
+# github.com/opencord/voltha-lib-go/v3 v3.0.10
 github.com/opencord/voltha-lib-go/v3/pkg/log
 github.com/opencord/voltha-lib-go/v3/pkg/db
 github.com/opencord/voltha-lib-go/v3/pkg/db/kvstore
@@ -109,7 +109,7 @@
 github.com/opencord/voltha-lib-go/v3/pkg/adapters/common
 github.com/opencord/voltha-lib-go/v3/pkg/adapters
 github.com/opencord/voltha-lib-go/v3/pkg/mocks
-# github.com/opencord/voltha-protos/v3 v3.2.2
+# github.com/opencord/voltha-protos/v3 v3.2.3
 github.com/opencord/voltha-protos/v3/go/common
 github.com/opencord/voltha-protos/v3/go/openflow_13
 github.com/opencord/voltha-protos/v3/go/voltha