diff --git a/api/layer/layer.go b/api/layer/layer.go
index 003476540..f38f324e6 100644
--- a/api/layer/layer.go
+++ b/api/layer/layer.go
@@ -21,7 +21,6 @@ import (
 	cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
 	"github.com/nspcc-dev/neofs-sdk-go/eacl"
 	"github.com/nspcc-dev/neofs-sdk-go/netmap"
-	"github.com/nspcc-dev/neofs-sdk-go/object/address"
 	oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
 	"github.com/nspcc-dev/neofs-sdk-go/owner"
 	"github.com/nspcc-dev/neofs-sdk-go/pool"
@@ -290,9 +289,7 @@ func (n *layer) Initialize(ctx context.Context, c Notificator) error {
 		return fmt.Errorf("already initialized")
 	}
 
-	if err := c.Subscribe(ctx, LockTopic, MsgHandlerFunc(n.handleLockTick)); err != nil {
-		return fmt.Errorf("couldn't initialize layer: %w", err)
-	}
+	// todo add notification handlers (e.g. for lifecycles)
 
 	c.Listen(ctx)
 
@@ -304,19 +301,6 @@ func (n *layer) IsNotificationEnabled() bool {
 	return n.ncontroller != nil
 }
 
-func (n *layer) handleLockTick(ctx context.Context, msg *nats.Msg) error {
-	addr := address.NewAddress()
-	if err := addr.Parse(string(msg.Data)); err != nil {
-		return fmt.Errorf("invalid msg, address expected: %w", err)
-	}
-
-	n.log.Debug("handling lock tick", zap.String("address", string(msg.Data)))
-
-	// todo clear cache
-	// and make sure having right access
-	return n.objectDelete(ctx, addr.ContainerID(), addr.ObjectID())
-}
-
 // IsAuthenticatedRequest check if access box exists in current request.
 func IsAuthenticatedRequest(ctx context.Context) bool {
 	_, ok := ctx.Value(api.BoxData).(*accessbox.Box)
diff --git a/api/layer/locking_test.go b/api/layer/locking_test.go
index 57cdad227..961bfb604 100644
--- a/api/layer/locking_test.go
+++ b/api/layer/locking_test.go
@@ -33,15 +33,12 @@ func TestObjectLockAttributes(t *testing.T) {
 	lockObj := tc.getSystemObject(obj.RetentionObject())
 	require.NotNil(t, lockObj)
 
-	tickTopic, tickEpoch := false, false
+	expEpoch := false
 	for _, attr := range lockObj.Attributes() {
-		if attr.Key() == AttributeSysTickEpoch {
-			tickEpoch = true
-		} else if attr.Key() == AttributeSysTickTopic {
-			tickTopic = true
+		if attr.Key() == AttributeExpirationEpoch {
+			expEpoch = true
 		}
 	}
 
-	require.Truef(t, tickTopic, "system header __NEOFS__TICK_TOPIC presence")
-	require.Truef(t, tickEpoch, "system header __NEOFS__TICK_EPOCH presence")
+	require.Truef(t, expEpoch, "system header __NEOFS__EXPIRATION_EPOCH presence")
 }
diff --git a/api/layer/system_object.go b/api/layer/system_object.go
index 64b9e3f3f..a57fb30d8 100644
--- a/api/layer/system_object.go
+++ b/api/layer/system_object.go
@@ -18,11 +18,11 @@ import (
 )
 
 const (
-	AttributeComplianceMode = ".s3-compliance-mode"
-	AttributeRetainUntil    = ".s3-retain-until"
-	AttributeSysTickEpoch   = "__NEOFS__TICK_EPOCH"
-	AttributeSysTickTopic   = "__NEOFS__TICK_TOPIC"
-	LockTopic               = "lock"
+	AttributeComplianceMode  = ".s3-compliance-mode"
+	AttributeRetainUntil     = ".s3-retain-until"
+	AttributeExpirationEpoch = "__NEOFS__EXPIRATION_EPOCH"
+	AttributeSysTickEpoch    = "__NEOFS__TICK_EPOCH"
+	AttributeSysTickTopic    = "__NEOFS__TICK_TOPIC"
 )
 
 func (n *layer) PutSystemObject(ctx context.Context, p *PutSystemObjectParams) (*data.ObjectInfo, error) {
@@ -296,8 +296,7 @@ func (n *layer) attributesFromLock(ctx context.Context, lock *data.ObjectLock) (
 		}
 
 		attrs := [][2]string{
-			{AttributeSysTickEpoch, strconv.FormatUint(exp, 10)},
-			{AttributeSysTickTopic, LockTopic},
+			{AttributeExpirationEpoch, strconv.FormatUint(exp, 10)},
 			{AttributeRetainUntil, lock.Until.Format(time.RFC3339)},
 		}
 
diff --git a/internal/neofstest/neofs_mock.go b/internal/neofstest/neofs_mock.go
index 7e0431bb7..fb8a8e7db 100644
--- a/internal/neofstest/neofs_mock.go
+++ b/internal/neofstest/neofs_mock.go
@@ -187,20 +187,20 @@ func (t *TestNeoFS) ReadObject(_ context.Context, prm neofs.PrmObjectRead) (*neo
 func (t *TestNeoFS) CreateObject(_ context.Context, prm neofs.PrmObjectCreate) (*oid.ID, error) {
 	id := test.ID()
 
-	attrs := make([]*object.Attribute, 0)
+	attrs := make([]object.Attribute, 0)
 
 	if prm.Filename != "" {
 		a := object.NewAttribute()
 		a.SetKey(object.AttributeFileName)
 		a.SetValue(prm.Filename)
-		attrs = append(attrs, a)
+		attrs = append(attrs, *a)
 	}
 
 	for i := range prm.Attributes {
 		a := object.NewAttribute()
 		a.SetKey(prm.Attributes[i][0])
 		a.SetValue(prm.Attributes[i][1])
-		attrs = append(attrs, a)
+		attrs = append(attrs, *a)
 	}
 
 	obj := object.New()
@@ -245,7 +245,7 @@ func (t *TestNeoFS) TimeToEpoch(ctx context.Context, futureTime time.Time) (uint
 	return t.currentEpoch, t.currentEpoch + uint64(futureTime.Second()), nil
 }
 
-func isMatched(attributes []*object.Attribute, filter object.SearchFilter) bool {
+func isMatched(attributes []object.Attribute, filter object.SearchFilter) bool {
 	for _, attr := range attributes {
 		if attr.Key() == filter.Header() && attr.Value() == filter.Value() {
 			return true