diff --git a/pkg/local_object_storage/engine/exists_test.go b/pkg/local_object_storage/engine/exists_test.go
index 1b51c10dc..9b3c0833f 100644
--- a/pkg/local_object_storage/engine/exists_test.go
+++ b/pkg/local_object_storage/engine/exists_test.go
@@ -42,7 +42,7 @@ func benchmarkExists(b *testing.B, shardNum int) {
 	for range b.N {
 		var shPrm shard.ExistsPrm
 		shPrm.Address = addr
-		shPrm.ParentAddress = oid.Address{}
+		shPrm.ECParentAddress = oid.Address{}
 		ok, _, err := e.exists(context.Background(), shPrm)
 		if err != nil || ok {
 			b.Fatalf("%t %v", ok, err)
diff --git a/pkg/local_object_storage/engine/put.go b/pkg/local_object_storage/engine/put.go
index e080191ae..ba4a144d1 100644
--- a/pkg/local_object_storage/engine/put.go
+++ b/pkg/local_object_storage/engine/put.go
@@ -71,21 +71,21 @@ func (e *StorageEngine) put(ctx context.Context, prm PutPrm) error {
 
 	// In #1146 this check was parallelized, however, it became
 	// much slower on fast machines for 4 shards.
-	var parent oid.Address
+	var ecParent oid.Address
 	if prm.Object.ECHeader() != nil {
-		parent.SetObject(prm.Object.ECHeader().Parent())
-		parent.SetContainer(addr.Container())
+		ecParent.SetObject(prm.Object.ECHeader().Parent())
+		ecParent.SetContainer(addr.Container())
 	}
 	var shPrm shard.ExistsPrm
 	shPrm.Address = addr
-	shPrm.ParentAddress = parent
+	shPrm.ECParentAddress = ecParent
 	existed, locked, err := e.exists(ctx, shPrm)
 	if err != nil {
 		return err
 	}
 
 	if !existed && locked {
-		lockers, err := e.GetLocked(ctx, parent)
+		lockers, err := e.GetLocked(ctx, ecParent)
 		if err != nil {
 			return err
 		}
diff --git a/pkg/local_object_storage/metabase/exists.go b/pkg/local_object_storage/metabase/exists.go
index 0294dd3ba..f6596e830 100644
--- a/pkg/local_object_storage/metabase/exists.go
+++ b/pkg/local_object_storage/metabase/exists.go
@@ -20,8 +20,8 @@ import (
 
 // ExistsPrm groups the parameters of Exists operation.
 type ExistsPrm struct {
-	addr  oid.Address
-	paddr oid.Address
+	addr         oid.Address
+	ecParentAddr oid.Address
 }
 
 // ExistsRes groups the resulting values of Exists operation.
@@ -37,9 +37,9 @@ func (p *ExistsPrm) SetAddress(addr oid.Address) {
 	p.addr = addr
 }
 
-// SetParent is an Exists option to set objects parent.
-func (p *ExistsPrm) SetParent(addr oid.Address) {
-	p.paddr = addr
+// SetECParent is an Exists option to set objects parent.
+func (p *ExistsPrm) SetECParent(addr oid.Address) {
+	p.ecParentAddr = addr
 }
 
 // Exists returns the fact that the object is in the metabase.
@@ -82,7 +82,7 @@ func (db *DB) Exists(ctx context.Context, prm ExistsPrm) (res ExistsRes, err err
 	currEpoch := db.epochState.CurrentEpoch()
 
 	err = db.boltDB.View(func(tx *bbolt.Tx) error {
-		res.exists, res.locked, err = db.exists(tx, prm.addr, prm.paddr, currEpoch)
+		res.exists, res.locked, err = db.exists(tx, prm.addr, prm.ecParentAddr, currEpoch)
 
 		return err
 	})
@@ -90,10 +90,10 @@ func (db *DB) Exists(ctx context.Context, prm ExistsPrm) (res ExistsRes, err err
 	return res, metaerr.Wrap(err)
 }
 
-func (db *DB) exists(tx *bbolt.Tx, addr oid.Address, parent oid.Address, currEpoch uint64) (bool, bool, error) {
+func (db *DB) exists(tx *bbolt.Tx, addr oid.Address, ecParent oid.Address, currEpoch uint64) (bool, bool, error) {
 	var locked bool
-	if !parent.Equals(oid.Address{}) {
-		locked = objectLocked(tx, parent.Container(), parent.Object())
+	if !ecParent.Equals(oid.Address{}) {
+		locked = objectLocked(tx, ecParent.Container(), ecParent.Object())
 	}
 	// check graveyard and object expiration first
 	st, err := objectStatus(tx, addr, currEpoch)
diff --git a/pkg/local_object_storage/shard/exists.go b/pkg/local_object_storage/shard/exists.go
index 784bf293a..82ce48dde 100644
--- a/pkg/local_object_storage/shard/exists.go
+++ b/pkg/local_object_storage/shard/exists.go
@@ -18,7 +18,7 @@ type ExistsPrm struct {
 	// Exists option to set object checked for existence.
 	Address oid.Address
 	// Exists option to set parent object checked for existence.
-	ParentAddress oid.Address
+	ECParentAddress oid.Address
 }
 
 // ExistsRes groups the resulting values of Exists operation.
@@ -74,7 +74,7 @@ func (s *Shard) Exists(ctx context.Context, prm ExistsPrm) (ExistsRes, error) {
 	} else {
 		var existsPrm meta.ExistsPrm
 		existsPrm.SetAddress(prm.Address)
-		existsPrm.SetParent(prm.ParentAddress)
+		existsPrm.SetECParent(prm.ECParentAddress)
 
 		var res meta.ExistsRes
 		res, err = s.metaBase.Exists(ctx, existsPrm)