diff --git a/client/common.go b/client/common.go
index 895e6ea..4542b1e 100644
--- a/client/common.go
+++ b/client/common.go
@@ -197,23 +197,17 @@ func (x *contextCall) processResponse() bool {
 	}
 
 	// get result status
-	st := apistatus.FromStatusV2(x.resp.GetMetaHeader().GetStatus())
-
-	successfulStatus := apistatus.IsSuccessful(st)
-	x.err = apistatus.ErrFromStatus(st)
-
-	return successfulStatus
+	x.err = apistatus.ErrorFromV2(x.resp.GetMetaHeader().GetStatus())
+	return x.err == nil
 }
 
 // processResponse verifies response signature.
-func (c *Client) processResponse(resp responseV2) (apistatus.Status, error) {
-	err := verifyServiceMessage(resp)
-	if err != nil {
-		return nil, fmt.Errorf("invalid response signature: %w", err)
+func (c *Client) processResponse(resp responseV2) error {
+	if err := verifyServiceMessage(resp); err != nil {
+		return fmt.Errorf("invalid response signature: %w", err)
 	}
 
-	st := apistatus.FromStatusV2(resp.GetMetaHeader().GetStatus())
-	return st, apistatus.ErrFromStatus(st)
+	return apistatus.ErrorFromV2(resp.GetMetaHeader().GetStatus())
 }
 
 // reads response (if rResp is set) and processes it. Result means success.
diff --git a/client/netmap.go b/client/netmap.go
index 27614c1..90b248c 100644
--- a/client/netmap.go
+++ b/client/netmap.go
@@ -217,8 +217,7 @@ func (c *Client) NetMapSnapshot(ctx context.Context, _ PrmNetMapSnapshot) (*ResN
 	}
 
 	var res ResNetMapSnapshot
-	_, err = c.processResponse(resp)
-	if err != nil {
+	if err = c.processResponse(resp); err != nil {
 		return nil, err
 	}
 
diff --git a/client/netmap_test.go b/client/netmap_test.go
index 8a57436..7003db0 100644
--- a/client/netmap_test.go
+++ b/client/netmap_test.go
@@ -52,7 +52,7 @@ func (x *serverNetMap) netMapSnapshot(_ context.Context, req v2netmap.SnapshotRe
 	var meta session.ResponseMetaHeader
 
 	if !x.statusOK {
-		meta.SetStatus(statusErr.ToStatusV2())
+		meta.SetStatus(statusErr.ErrorToV2())
 	}
 
 	var resp v2netmap.SnapshotResponse
diff --git a/client/object_delete.go b/client/object_delete.go
index bcb9b84..72f9a38 100644
--- a/client/object_delete.go
+++ b/client/object_delete.go
@@ -156,8 +156,7 @@ func (c *Client) ObjectDelete(ctx context.Context, prm PrmObjectDelete) (*ResObj
 	}
 
 	var res ResObjectDelete
-	_, err = c.processResponse(resp)
-	if err != nil {
+	if err = c.processResponse(resp); err != nil {
 		return nil, err
 	}
 
diff --git a/client/object_get.go b/client/object_get.go
index bedfcba..4a506d7 100644
--- a/client/object_get.go
+++ b/client/object_get.go
@@ -133,7 +133,7 @@ func (x *ObjectReader) ReadHeader(dst *object.Object) bool {
 		return false
 	}
 
-	_, x.err = x.client.processResponse(&resp)
+	x.err = x.client.processResponse(&resp)
 	if x.err != nil {
 		return false
 	}
@@ -186,7 +186,7 @@ func (x *ObjectReader) readChunk(buf []byte) (int, bool) {
 			return read, false
 		}
 
-		_, x.err = x.client.processResponse(&resp)
+		x.err = x.client.processResponse(&resp)
 		if x.err != nil {
 			return read, false
 		}
@@ -433,8 +433,7 @@ func (c *Client) ObjectHead(ctx context.Context, prm PrmObjectHead) (*ResObjectH
 	}
 
 	var res ResObjectHead
-	_, err = c.processResponse(resp)
-	if err != nil {
+	if err = c.processResponse(resp); err != nil {
 		return nil, err
 	}
 
@@ -529,7 +528,7 @@ func (x *ObjectRangeReader) readChunk(buf []byte) (int, bool) {
 			return read, false
 		}
 
-		_, x.err = x.client.processResponse(&resp)
+		x.err = x.client.processResponse(&resp)
 		if x.err != nil {
 			return read, false
 		}
diff --git a/client/object_hash.go b/client/object_hash.go
index 847a801..f87e631 100644
--- a/client/object_hash.go
+++ b/client/object_hash.go
@@ -195,8 +195,7 @@ func (c *Client) ObjectHash(ctx context.Context, prm PrmObjectHash) (*ResObjectH
 	}
 
 	var res ResObjectHash
-	_, err = c.processResponse(resp)
-	if err != nil {
+	if err = c.processResponse(resp); err != nil {
 		return nil, err
 	}
 
diff --git a/client/object_put.go b/client/object_put.go
index e117e2f..806b502 100644
--- a/client/object_put.go
+++ b/client/object_put.go
@@ -12,7 +12,6 @@ import (
 	"github.com/nspcc-dev/neofs-api-go/v2/rpc/client"
 	v2session "github.com/nspcc-dev/neofs-api-go/v2/session"
 	"github.com/nspcc-dev/neofs-sdk-go/bearer"
-	apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
 	cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
 	neofscrypto "github.com/nspcc-dev/neofs-sdk-go/crypto"
 	"github.com/nspcc-dev/neofs-sdk-go/object"
@@ -206,8 +205,7 @@ func (x *ObjectWriter) Close() (*ResObjectPut, error) {
 		return nil, x.err
 	}
 
-	_, x.err = x.client.processResponse(&x.respV2)
-	if x.err != nil {
+	if x.err = x.client.processResponse(&x.respV2); x.err != nil {
 		return nil, x.err
 	}
 
@@ -275,12 +273,12 @@ func (x *objectWriter) InitDataStream(header object.Object) (io.Writer, error) {
 		}, nil
 	}
 
-	res, err := stream.Close()
+	_, err = stream.Close()
 	if err != nil {
 		return nil, err
 	}
 
-	return nil, apistatus.ErrFromStatus(res)
+	return nil, errors.New("unexpected error")
 }
 
 type payloadWriter struct {
@@ -296,12 +294,12 @@ func (x *payloadWriter) Write(p []byte) (int, error) {
 }
 
 func (x *payloadWriter) Close() error {
-	res, err := x.stream.Close()
+	_, err := x.stream.Close()
 	if err != nil {
 		return err
 	}
 
-	return apistatus.ErrFromStatus(res)
+	return nil
 }
 
 // CreateObject creates new NeoFS object with given payload data and stores it
diff --git a/client/object_search.go b/client/object_search.go
index bdd6481..3f8b9c4 100644
--- a/client/object_search.go
+++ b/client/object_search.go
@@ -125,7 +125,7 @@ func (x *ObjectListReader) Read(buf []oid.ID) (int, bool) {
 			return read, false
 		}
 
-		_, x.err = x.client.processResponse(&resp)
+		x.err = x.client.processResponse(&resp)
 		if x.err != nil {
 			return read, false
 		}
diff --git a/client/status/common.go b/client/status/common.go
index ec01eb9..e3e5b04 100644
--- a/client/status/common.go
+++ b/client/status/common.go
@@ -27,7 +27,7 @@ var (
 )
 
 // ServerInternal describes failure statuses related to internal server errors.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 //
 // The status is purely informative, the client should not go into details of the error except for debugging needs.
 type ServerInternal struct {
@@ -51,18 +51,18 @@ func (x ServerInternal) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *ServerInternal) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: INTERNAL;
 //   - string message: empty;
 //   - details: empty.
-func (x ServerInternal) ToStatusV2() *status.Status {
+func (x ServerInternal) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(status.Internal, status.GlobalizeCommonFail))
 	return &x.v2
 }
@@ -87,7 +87,7 @@ func WriteInternalServerErr(x *ServerInternal, err error) {
 }
 
 // WrongMagicNumber describes failure status related to incorrect network magic.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type WrongMagicNumber struct {
 	v2 status.Status
 }
@@ -109,18 +109,18 @@ func (x WrongMagicNumber) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *WrongMagicNumber) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: WRONG_MAGIC_NUMBER;
 //   - string message: empty;
 //   - details: empty.
-func (x WrongMagicNumber) ToStatusV2() *status.Status {
+func (x WrongMagicNumber) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(status.WrongMagicNumber, status.GlobalizeCommonFail))
 	return &x.v2
 }
@@ -165,7 +165,7 @@ func (x WrongMagicNumber) CorrectMagic() (magic uint64, ok int8) {
 }
 
 // SignatureVerification describes failure status related to signature verification.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type SignatureVerification struct {
 	v2 status.Status
 }
@@ -194,19 +194,19 @@ func (x SignatureVerification) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *SignatureVerification) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: SIGNATURE_VERIFICATION_FAIL;
-//   - string message: written message via SetMessage or
+//   - string message: written message via [SignatureVerification.SetMessage] or
 //     "signature verification failed" as a default message;
 //   - details: empty.
-func (x SignatureVerification) ToStatusV2() *status.Status {
+func (x SignatureVerification) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(status.SignatureVerificationFail, status.GlobalizeCommonFail))
 
 	if x.v2.Message() == "" {
@@ -233,7 +233,7 @@ func (x SignatureVerification) Message() string {
 }
 
 // NodeUnderMaintenance describes failure status for nodes being under maintenance.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type NodeUnderMaintenance struct {
 	v2 status.Status
 }
@@ -267,14 +267,14 @@ func (x *NodeUnderMaintenance) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: NODE_UNDER_MAINTENANCE;
-//   - string message: written message via SetMessage or
+//   - string message: written message via [NodeUnderMaintenance.SetMessage] or
 //     "node is under maintenance" as a default message;
 //   - details: empty.
-func (x NodeUnderMaintenance) ToStatusV2() *status.Status {
+func (x NodeUnderMaintenance) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(status.NodeUnderMaintenance, status.GlobalizeCommonFail))
 	if x.v2.Message() == "" {
 		x.v2.SetMessage(defaultNodeUnderMaintenanceMsg)
diff --git a/client/status/common_test.go b/client/status/common_test.go
index 032263a..5576f48 100644
--- a/client/status/common_test.go
+++ b/client/status/common_test.go
@@ -14,14 +14,14 @@ func TestServerInternal_Message(t *testing.T) {
 	var st apistatus.ServerInternal
 
 	res := st.Message()
-	resv2 := apistatus.ToStatusV2(st).Message()
+	resv2 := apistatus.ErrorToV2(st).Message()
 	require.Empty(t, res)
 	require.Empty(t, resv2)
 
 	st.SetMessage(msg)
 
 	res = st.Message()
-	resv2 = apistatus.ToStatusV2(st).Message()
+	resv2 = apistatus.ErrorToV2(st).Message()
 	require.Equal(t, msg, res)
 	require.Equal(t, msg, resv2)
 }
@@ -42,7 +42,7 @@ func TestWrongMagicNumber_CorrectMagic(t *testing.T) {
 	require.EqualValues(t, 1, ok)
 
 	// corrupt the value
-	apistatus.ToStatusV2(st).IterateDetails(func(d *status.Detail) bool {
+	apistatus.ErrorToV2(st).IterateDetails(func(d *status.Detail) bool {
 		d.SetValue([]byte{1, 2, 3}) // any slice with len != 8
 		return true
 	})
@@ -64,7 +64,7 @@ func TestSignatureVerification(t *testing.T) {
 
 		st.SetMessage(msg)
 
-		stV2 := st.ToStatusV2()
+		stV2 := st.ErrorToV2()
 
 		require.Equal(t, msg, st.Message())
 		require.Equal(t, msg, stV2.Message())
@@ -73,7 +73,7 @@ func TestSignatureVerification(t *testing.T) {
 	t.Run("empty to V2", func(t *testing.T) {
 		var st apistatus.SignatureVerification
 
-		stV2 := st.ToStatusV2()
+		stV2 := st.ErrorToV2()
 
 		require.Equal(t, "signature verification failed", stV2.Message())
 	})
@@ -84,7 +84,7 @@ func TestSignatureVerification(t *testing.T) {
 
 		st.SetMessage(msg)
 
-		stV2 := st.ToStatusV2()
+		stV2 := st.ErrorToV2()
 
 		require.Equal(t, msg, stV2.Message())
 	})
@@ -103,7 +103,7 @@ func TestNodeUnderMaintenance(t *testing.T) {
 
 		st.SetMessage(msg)
 
-		stV2 := st.ToStatusV2()
+		stV2 := st.ErrorToV2()
 
 		require.Equal(t, msg, st.Message())
 		require.Equal(t, msg, stV2.Message())
@@ -112,7 +112,7 @@ func TestNodeUnderMaintenance(t *testing.T) {
 	t.Run("empty to V2", func(t *testing.T) {
 		var st apistatus.NodeUnderMaintenance
 
-		stV2 := st.ToStatusV2()
+		stV2 := st.ErrorToV2()
 
 		require.Empty(t, "", stV2.Message())
 	})
@@ -123,7 +123,7 @@ func TestNodeUnderMaintenance(t *testing.T) {
 
 		st.SetMessage(msg)
 
-		stV2 := st.ToStatusV2()
+		stV2 := st.ErrorToV2()
 
 		require.Equal(t, msg, stV2.Message())
 	})
diff --git a/client/status/container.go b/client/status/container.go
index c643123..526d46f 100644
--- a/client/status/container.go
+++ b/client/status/container.go
@@ -17,7 +17,7 @@ var (
 )
 
 // ContainerNotFound describes status of the failure because of the missing container.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type ContainerNotFound struct {
 	v2 status.Status
 }
@@ -46,18 +46,18 @@ func (x ContainerNotFound) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *ContainerNotFound) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: CONTAINER_NOT_FOUND;
 //   - string message: "container not found";
 //   - details: empty.
-func (x ContainerNotFound) ToStatusV2() *status.Status {
+func (x ContainerNotFound) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(container.StatusNotFound, container.GlobalizeFail))
 	x.v2.SetMessage(defaultContainerNotFoundMsg)
 	return &x.v2
@@ -65,7 +65,7 @@ func (x ContainerNotFound) ToStatusV2() *status.Status {
 
 // EACLNotFound describes status of the failure because of the missing eACL
 // table.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type EACLNotFound struct {
 	v2 status.Status
 }
@@ -94,18 +94,18 @@ func (x EACLNotFound) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *EACLNotFound) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: EACL_NOT_FOUND;
 //   - string message: "eACL not found";
 //   - details: empty.
-func (x EACLNotFound) ToStatusV2() *status.Status {
+func (x EACLNotFound) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(container.StatusEACLNotFound, container.GlobalizeFail))
 	x.v2.SetMessage(defaultEACLNotFoundMsg)
 	return &x.v2
diff --git a/client/status/object.go b/client/status/object.go
index 2726088..906cd8f 100644
--- a/client/status/object.go
+++ b/client/status/object.go
@@ -29,7 +29,7 @@ var (
 )
 
 // ObjectLocked describes status of the failure because of the locked object.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type ObjectLocked struct {
 	v2 status.Status
 }
@@ -58,25 +58,25 @@ func (x ObjectLocked) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *ObjectLocked) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: LOCKED;
 //   - string message: "object is locked";
 //   - details: empty.
-func (x ObjectLocked) ToStatusV2() *status.Status {
+func (x ObjectLocked) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(object.StatusLocked, object.GlobalizeFail))
 	x.v2.SetMessage(defaultObjectLockedMsg)
 	return &x.v2
 }
 
 // LockNonRegularObject describes status returned on locking the non-regular object.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type LockNonRegularObject struct {
 	v2 status.Status
 }
@@ -105,25 +105,25 @@ func (x LockNonRegularObject) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *LockNonRegularObject) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: LOCK_NON_REGULAR_OBJECT;
 //   - string message: "locking non-regular object is forbidden";
 //   - details: empty.
-func (x LockNonRegularObject) ToStatusV2() *status.Status {
+func (x LockNonRegularObject) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(object.StatusLockNonRegularObject, object.GlobalizeFail))
 	x.v2.SetMessage(defaultLockNonRegularObjectMsg)
 	return &x.v2
 }
 
 // ObjectAccessDenied describes status of the failure because of the access control violation.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type ObjectAccessDenied struct {
 	v2 status.Status
 }
@@ -152,18 +152,18 @@ func (x ObjectAccessDenied) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *ObjectAccessDenied) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: ACCESS_DENIED;
 //   - string message: "access to object operation denied";
 //   - details: empty.
-func (x ObjectAccessDenied) ToStatusV2() *status.Status {
+func (x ObjectAccessDenied) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(object.StatusAccessDenied, object.GlobalizeFail))
 	x.v2.SetMessage(defaultObjectAccessDeniedMsg)
 	return &x.v2
@@ -181,7 +181,7 @@ func (x ObjectAccessDenied) Reason() string {
 }
 
 // ObjectNotFound describes status of the failure because of the missing object.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type ObjectNotFound struct {
 	v2 status.Status
 }
@@ -210,18 +210,18 @@ func (x ObjectNotFound) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *ObjectNotFound) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: OBJECT_NOT_FOUND;
 //   - string message: "object not found";
 //   - details: empty.
-func (x ObjectNotFound) ToStatusV2() *status.Status {
+func (x ObjectNotFound) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(object.StatusNotFound, object.GlobalizeFail))
 	x.v2.SetMessage(defaultObjectNotFoundMsg)
 	return &x.v2
@@ -257,18 +257,18 @@ func (x ObjectAlreadyRemoved) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *ObjectAlreadyRemoved) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: OBJECT_ALREADY_REMOVED;
 //   - string message: "object already removed";
 //   - details: empty.
-func (x ObjectAlreadyRemoved) ToStatusV2() *status.Status {
+func (x ObjectAlreadyRemoved) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(object.StatusAlreadyRemoved, object.GlobalizeFail))
 	x.v2.SetMessage(defaultObjectAlreadyRemovedMsg)
 	return &x.v2
@@ -276,7 +276,7 @@ func (x ObjectAlreadyRemoved) ToStatusV2() *status.Status {
 
 // ObjectOutOfRange describes status of the failure because of the incorrect
 // provided object ranges.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type ObjectOutOfRange struct {
 	v2 status.Status
 }
@@ -305,18 +305,18 @@ func (x ObjectOutOfRange) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *ObjectOutOfRange) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: OUT_OF_RANGE;
 //   - string message: "out of range";
 //   - details: empty.
-func (x ObjectOutOfRange) ToStatusV2() *status.Status {
+func (x ObjectOutOfRange) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(object.StatusOutOfRange, object.GlobalizeFail))
 	x.v2.SetMessage(defaultObjectOutOfRangeMsg)
 	return &x.v2
diff --git a/client/status/object_test.go b/client/status/object_test.go
index 2e34ecf..126588a 100644
--- a/client/status/object_test.go
+++ b/client/status/object_test.go
@@ -14,13 +14,13 @@ func TestObjectAccessDenied_WriteReason(t *testing.T) {
 
 	res := st.Reason()
 	require.Empty(t, res)
-	detailNum := apistatus.ToStatusV2(st).NumberOfDetails()
+	detailNum := apistatus.ErrorToV2(st).NumberOfDetails()
 	require.Zero(t, detailNum)
 
 	st.WriteReason(reason)
 
 	res = st.Reason()
 	require.Equal(t, reason, res)
-	detailNum = apistatus.ToStatusV2(st).NumberOfDetails()
+	detailNum = apistatus.ErrorToV2(st).NumberOfDetails()
 	require.EqualValues(t, 1, detailNum)
 }
diff --git a/client/status/session.go b/client/status/session.go
index a6a04c0..6fc470d 100644
--- a/client/status/session.go
+++ b/client/status/session.go
@@ -17,7 +17,7 @@ var (
 )
 
 // SessionTokenNotFound describes status of the failure because of the missing session token.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type SessionTokenNotFound struct {
 	v2 status.Status
 }
@@ -46,25 +46,25 @@ func (x SessionTokenNotFound) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *SessionTokenNotFound) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: TOKEN_NOT_FOUND;
 //   - string message: "session token not found";
 //   - details: empty.
-func (x SessionTokenNotFound) ToStatusV2() *status.Status {
+func (x SessionTokenNotFound) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(session.StatusTokenNotFound, session.GlobalizeFail))
 	x.v2.SetMessage(defaultSessionTokenNotFoundMsg)
 	return &x.v2
 }
 
 // SessionTokenExpired describes status of the failure because of the expired session token.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type SessionTokenExpired struct {
 	v2 status.Status
 }
@@ -93,18 +93,18 @@ func (x SessionTokenExpired) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *SessionTokenExpired) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
 
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
+// ErrorToV2 implements [StatusV2] interface method.
+// If the value was returned by [ErrorFromV2], returns the source message.
 // Otherwise, returns message with
 //   - code: TOKEN_EXPIRED;
 //   - string message: "expired session token";
 //   - details: empty.
-func (x SessionTokenExpired) ToStatusV2() *status.Status {
+func (x SessionTokenExpired) ErrorToV2() *status.Status {
 	x.v2.SetCode(globalizeCodeV2(session.StatusTokenExpired, session.GlobalizeFail))
 	x.v2.SetMessage(defaultSessionTokenExpiredMsg)
 	return &x.v2
diff --git a/client/status/status.go b/client/status/status.go
deleted file mode 100644
index a220f2f..0000000
--- a/client/status/status.go
+++ /dev/null
@@ -1,44 +0,0 @@
-package apistatus
-
-// Status defines a variety of NeoFS API status returns.
-//
-// All statuses are split into two disjoint subsets: successful and failed, and:
-//   - statuses that implement the build-in error interface are considered failed statuses;
-//   - all other value types are considered successes (nil is a default success).
-//
-// In Go code type of success can be determined by a type switch, failure - by a switch with errors.As calls.
-// Nil should be considered as a success, and default switch section - as an unrecognized Status.
-//
-// To convert statuses into errors and vice versa, use functions ErrToStatus and ErrFromStatus, respectively.
-// ErrFromStatus function returns nil for successful statuses. However, to simplify the check of statuses for success,
-// IsSuccessful function should be used (try to avoid nil comparison).
-// It should be noted that using direct typecasting is not a compatible approach.
-//
-// To transport statuses using the NeoFS API V2 protocol, see StatusV2 interface and FromStatusV2 and ToStatusV2 functions.
-type Status any
-
-// ErrFromStatus converts Status instance to error if it is failed. Returns nil on successful Status.
-//
-// Note: direct assignment may not be compatibility-safe.
-func ErrFromStatus(st Status) error {
-	if err, ok := st.(error); ok {
-		return err
-	}
-
-	return nil
-}
-
-// ErrToStatus converts the error instance to Status instance.
-//
-// Note: direct assignment may not be compatibility-safe.
-func ErrToStatus(err error) Status {
-	return err
-}
-
-// IsSuccessful checks if status is successful.
-//
-// Note: direct cast may not be compatibility-safe.
-func IsSuccessful(st Status) bool {
-	_, ok := st.(error)
-	return !ok
-}
diff --git a/client/status/status_test.go b/client/status/status_test.go
deleted file mode 100644
index 6dcdd95..0000000
--- a/client/status/status_test.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package apistatus_test
-
-import (
-	"errors"
-	"testing"
-
-	apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
-	"github.com/stretchr/testify/require"
-)
-
-func TestErrors(t *testing.T) {
-	t.Run("error source", func(t *testing.T) {
-		err := errors.New("some error")
-
-		st := apistatus.ErrToStatus(err)
-
-		success := apistatus.IsSuccessful(st)
-		require.False(t, success)
-
-		res := apistatus.ErrFromStatus(st)
-
-		require.ErrorIs(t, res, err)
-	})
-
-	t.Run("non-error source", func(t *testing.T) {
-		var st apistatus.Status = "any non-error type"
-
-		success := apistatus.IsSuccessful(st)
-		require.True(t, success)
-
-		res := apistatus.ErrFromStatus(st)
-
-		require.Nil(t, res)
-	})
-}
diff --git a/client/status/success.go b/client/status/success.go
deleted file mode 100644
index bd9ee82..0000000
--- a/client/status/success.go
+++ /dev/null
@@ -1,32 +0,0 @@
-package apistatus
-
-import (
-	"github.com/nspcc-dev/neofs-api-go/v2/status"
-)
-
-// SuccessDefaultV2 represents Status instance of default success. Implements StatusV2.
-type SuccessDefaultV2 struct {
-	isNil bool
-
-	v2 *status.Status
-}
-
-// implements local interface defined in FromStatusV2 func.
-func (x *SuccessDefaultV2) fromStatusV2(st *status.Status) {
-	x.isNil = st == nil
-	x.v2 = st
-}
-
-// ToStatusV2 implements StatusV2 interface method.
-// If the value was returned by FromStatusV2, returns the source message.
-// Otherwise, returns message with
-//   - code: OK;
-//   - string message: empty;
-//   - details: empty.
-func (x SuccessDefaultV2) ToStatusV2() *status.Status {
-	if x.isNil || x.v2 != nil {
-		return x.v2
-	}
-
-	return newStatusV2WithLocalCode(status.OK, status.GlobalizeSuccess)
-}
diff --git a/client/status/unrecognized.go b/client/status/unrecognized.go
index a48ee44..15a8e1e 100644
--- a/client/status/unrecognized.go
+++ b/client/status/unrecognized.go
@@ -9,7 +9,7 @@ import (
 var ErrUnrecognizedStatusV2 UnrecognizedStatusV2
 
 // UnrecognizedStatusV2 describes status of the uncertain failure.
-// Instances provide [Status], [StatusV2] and error interfaces.
+// Instances provide [StatusV2] and error interfaces.
 type UnrecognizedStatusV2 struct {
 	v2 status.Status
 }
@@ -28,7 +28,7 @@ func (x UnrecognizedStatusV2) Is(target error) bool {
 	}
 }
 
-// implements local interface defined in FromStatusV2 func.
+// implements local interface defined in [ErrorFromV2] func.
 func (x *UnrecognizedStatusV2) fromStatusV2(st *status.Status) {
 	x.v2 = *st
 }
diff --git a/client/status/v2.go b/client/status/v2.go
index 69ab264..8974ea2 100644
--- a/client/status/v2.go
+++ b/client/status/v2.go
@@ -1,6 +1,7 @@
 package apistatus
 
 import (
+	"errors"
 	"fmt"
 
 	"github.com/nspcc-dev/neofs-api-go/v2/container"
@@ -9,26 +10,24 @@ import (
 	"github.com/nspcc-dev/neofs-api-go/v2/status"
 )
 
-// StatusV2 defines a variety of Status instances compatible with NeoFS API V2 protocol.
+// StatusV2 defines a variety of status instances compatible with NeoFS API V2 protocol.
 //
 // Note: it is not recommended to use this type directly, it is intended for documentation of the library functionality.
 type StatusV2 interface {
-	Status
-
-	// ToStatusV2 returns the status as github.com/nspcc-dev/neofs-api-go/v2/status.Status message structure.
-	ToStatusV2() *status.Status
+	// ErrorToV2 returns the status as github.com/nspcc-dev/neofs-api-go/v2/status.Status message structure.
+	ErrorToV2() *status.Status
 }
 
-// FromStatusV2 converts status.Status message structure to Status instance. Inverse to ToStatusV2 operation.
+// ErrorFromV2 converts [status.Status] message structure to error. Inverse to [ErrorToV2] operation.
 //
-// If result is not nil, it implements StatusV2. This fact should be taken into account only when passing
-// the result to the inverse function ToStatusV2, casts are not compatibility-safe.
+// If result is not nil, it implements [StatusV2]. This fact should be taken into account only when passing
+// the result to the inverse function [ErrorToV2], casts are not compatibility-safe.
 //
-// Below is the mapping of return codes to Status instance types (with a description of parsing details).
+// Below is the mapping of return codes to status instance types (with a description of parsing details).
 // Note: notice if the return type is a pointer.
 //
 // Successes:
-//   - [status.OK]: *[SuccessDefaultV2] (this also includes nil argument).
+//   - [status.OK]: nil (this also includes nil argument).
 //
 // Common failures:
 //   - [status.Internal]: *[ServerInternal];
@@ -51,9 +50,10 @@ type StatusV2 interface {
 // Session failures:
 //   - [session.StatusTokenNotFound]: *[SessionTokenNotFound];
 //   - [session.StatusTokenExpired]: *[SessionTokenExpired];
-func FromStatusV2(st *status.Status) Status {
+func ErrorFromV2(st *status.Status) error {
 	var decoder interface {
 		fromStatusV2(*status.Status)
+		Error() string
 	}
 
 	switch code := st.Code(); {
@@ -61,7 +61,7 @@ func FromStatusV2(st *status.Status) Status {
 		//nolint:exhaustive
 		switch status.LocalizeSuccess(&code); code {
 		case status.OK:
-			decoder = new(SuccessDefaultV2)
+			return nil
 		}
 	case status.IsCommonFail(code):
 		switch status.LocalizeCommonFail(&code); code {
@@ -116,22 +116,23 @@ func FromStatusV2(st *status.Status) Status {
 	return decoder
 }
 
-// ToStatusV2 converts Status instance to status.Status message structure. Inverse to FromStatusV2 operation.
+// ErrorToV2 converts error to status.Status message structure. Inverse to [ErrorFromV2] operation.
 //
-// If argument is the StatusV2 instance, it is converted directly.
-// Otherwise, successes are converted with status.OK code w/o details and message,
-// failures - with status.Internal and error text message w/o details.
-func ToStatusV2(st Status) *status.Status {
-	if v, ok := st.(StatusV2); ok {
-		return v.ToStatusV2()
-	}
-
-	if IsSuccessful(st) {
+// If argument is the [StatusV2] instance, it is converted directly.
+// Otherwise, successes are converted with [status.OK] code w/o details and message,
+// failures - with [status.Internal] and error text message w/o details.
+func ErrorToV2(err error) *status.Status {
+	if err == nil {
 		return newStatusV2WithLocalCode(status.OK, status.GlobalizeSuccess)
 	}
 
+	var instance StatusV2
+	if errors.As(err, &instance) {
+		return instance.ErrorToV2()
+	}
+
 	internalErrorStatus := newStatusV2WithLocalCode(status.Internal, status.GlobalizeCommonFail)
-	internalErrorStatus.SetMessage(st.(error).Error()) // type cast never panics because IsSuccessful() checks cast
+	internalErrorStatus.SetMessage(err.Error())
 
 	return internalErrorStatus
 }
diff --git a/client/status/v2_test.go b/client/status/v2_test.go
index 8993153..d38beb2 100644
--- a/client/status/v2_test.go
+++ b/client/status/v2_test.go
@@ -9,7 +9,7 @@ import (
 )
 
 func TestFromStatusV2(t *testing.T) {
-	type statusConstructor func() apistatus.Status
+	type statusConstructor func() error
 
 	for _, testItem := range [...]struct {
 		status         any // Status or statusConstructor
@@ -19,32 +19,20 @@ func TestFromStatusV2(t *testing.T) {
 		checkAsErr     func(error) bool
 	}{
 		{
-			status:    errors.New("some error"),
+			status: (statusConstructor)(func() error {
+				return errors.New("some error")
+			}),
 			codeV2:    1024,
 			messageV2: "some error",
 		},
 		{
-			status: 1,
+			status: (statusConstructor)(func() error {
+				return nil
+			}),
 			codeV2: 0,
 		},
 		{
-			status: "text",
-			codeV2: 0,
-		},
-		{
-			status: false,
-			codeV2: 0,
-		},
-		{
-			status: true,
-			codeV2: 0,
-		},
-		{
-			status: nil,
-			codeV2: 0,
-		},
-		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				st := new(apistatus.ServerInternal)
 				st.SetMessage("internal error message")
 
@@ -58,7 +46,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				st := new(apistatus.WrongMagicNumber)
 				st.WriteCorrectMagic(322)
 
@@ -72,7 +60,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				return new(apistatus.ObjectLocked)
 			}),
 			codeV2:         2050,
@@ -83,7 +71,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				return new(apistatus.LockNonRegularObject)
 			}),
 			codeV2:         2051,
@@ -94,7 +82,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				st := new(apistatus.ObjectAccessDenied)
 				st.WriteReason("any reason")
 
@@ -108,7 +96,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				return new(apistatus.ObjectNotFound)
 			}),
 			codeV2:         2049,
@@ -119,7 +107,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				return new(apistatus.ObjectAlreadyRemoved)
 			}),
 			codeV2:         2052,
@@ -130,7 +118,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: statusConstructor(func() apistatus.Status {
+			status: statusConstructor(func() error {
 				return new(apistatus.ObjectOutOfRange)
 			}),
 			codeV2:         2053,
@@ -141,7 +129,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				return new(apistatus.ContainerNotFound)
 			}),
 			codeV2:         3072,
@@ -152,7 +140,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				return new(apistatus.EACLNotFound)
 			}),
 			codeV2:         3073,
@@ -163,7 +151,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				return new(apistatus.SessionTokenNotFound)
 			}),
 			codeV2:         4096,
@@ -174,7 +162,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				return new(apistatus.SessionTokenExpired)
 			}),
 			codeV2:         4097,
@@ -185,7 +173,7 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 		{
-			status: (statusConstructor)(func() apistatus.Status {
+			status: (statusConstructor)(func() error {
 				return new(apistatus.NodeUnderMaintenance)
 			}),
 			codeV2:         1027,
@@ -196,15 +184,13 @@ func TestFromStatusV2(t *testing.T) {
 			},
 		},
 	} {
-		var st apistatus.Status
+		var st error
+		cons, ok := testItem.status.(statusConstructor)
+		require.True(t, ok)
 
-		if cons, ok := testItem.status.(statusConstructor); ok {
-			st = cons()
-		} else {
-			st = testItem.status
-		}
+		st = cons()
 
-		stv2 := apistatus.ToStatusV2(st)
+		stv2 := apistatus.ErrorToV2(st)
 
 		// must generate the same status.Status message
 		require.EqualValues(t, testItem.codeV2, stv2.Code())
@@ -212,27 +198,25 @@ func TestFromStatusV2(t *testing.T) {
 			require.Equal(t, testItem.messageV2, stv2.Message())
 		}
 
-		_, ok := st.(apistatus.StatusV2)
+		_, ok = st.(apistatus.StatusV2)
 		if ok {
 			// restore and convert again
-			restored := apistatus.FromStatusV2(stv2)
+			restored := apistatus.ErrorFromV2(stv2)
 
-			res := apistatus.ToStatusV2(restored)
+			res := apistatus.ErrorToV2(restored)
 
 			// must generate the same status.Status message
 			require.Equal(t, stv2, res)
 		}
 
 		randomError := errors.New("garbage")
-		errFromStatus := apistatus.ErrFromStatus(st)
-
 		for _, err := range testItem.compatibleErrs {
-			require.ErrorIs(t, errFromStatus, err)
+			require.ErrorIs(t, st, err)
 			require.NotErrorIs(t, randomError, err)
 		}
 
 		if testItem.checkAsErr != nil {
-			require.True(t, testItem.checkAsErr(errFromStatus))
+			require.True(t, testItem.checkAsErr(st))
 		}
 	}
 }
diff --git a/pool/mock_test.go b/pool/mock_test.go
index ccbe070..39a61da 100644
--- a/pool/mock_test.go
+++ b/pool/mock_test.go
@@ -8,7 +8,6 @@ import (
 	sessionv2 "github.com/nspcc-dev/neofs-api-go/v2/session"
 	"github.com/nspcc-dev/neofs-sdk-go/accounting"
 	sdkClient "github.com/nspcc-dev/neofs-sdk-go/client"
-	apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
 	"github.com/nspcc-dev/neofs-sdk-go/container"
 	cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
 	neofscrypto "github.com/nspcc-dev/neofs-sdk-go/crypto"
@@ -27,7 +26,7 @@ type mockClient struct {
 	errorOnCreateSession bool
 	errorOnEndpointInfo  bool
 	errorOnNetworkInfo   bool
-	stOnGetObject        apistatus.Status
+	errOnGetObject       error
 }
 
 func newMockClient(addr string, signer neofscrypto.Signer) *mockClient {
@@ -60,8 +59,8 @@ func (m *mockClient) errOnDial() {
 	m.errOnNetworkInfo()
 }
 
-func (m *mockClient) statusOnGetObject(st apistatus.Status) {
-	m.stOnGetObject = st
+func (m *mockClient) statusOnGetObject(err error) {
+	m.errOnGetObject = err
 }
 
 func newToken(signer neofscrypto.Signer) *session.Object {
@@ -139,13 +138,12 @@ func (m *mockClient) objectDelete(context.Context, PrmObjectDelete) error {
 func (m *mockClient) objectGet(context.Context, PrmObjectGet) (ResGetObject, error) {
 	var res ResGetObject
 
-	if m.stOnGetObject == nil {
+	if m.errOnGetObject == nil {
 		return res, nil
 	}
 
-	err := apistatus.ErrFromStatus(m.stOnGetObject)
-	m.updateErrorRate(err)
-	return res, err
+	m.updateErrorRate(m.errOnGetObject)
+	return res, m.errOnGetObject
 }
 
 func (m *mockClient) objectHead(context.Context, PrmObjectHead) (object.Object, error) {