diff --git a/api/handler/acl.go b/api/handler/acl.go
index a90b8d3b..14694c92 100644
--- a/api/handler/acl.go
+++ b/api/handler/acl.go
@@ -27,7 +27,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
 	engineiam "git.frostfs.info/TrueCloudLab/policy-engine/iam"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"go.uber.org/zap"
 )
@@ -439,13 +438,9 @@ func (h *handler) putBucketACLAPEHandler(w http.ResponseWriter, r *http.Request,
 	}
 
 	chainRules := bucketCannedACLToAPERules(cannedACL, reqInfo, key, bktInfo.CID)
-
-	target := engine.NamespaceTarget(reqInfo.Namespace)
-	for _, chainPolicy := range chainRules {
-		if err = h.ape.AddChain(target, chainPolicy); err != nil {
-			h.logAndSendError(w, "failed to add morph rule chain", reqInfo, err, zap.String("chain_id", string(chainPolicy.ID)))
-			return
-		}
+	if err = h.ape.SaveACLChains(reqInfo.Namespace, chainRules); err != nil {
+		h.logAndSendError(w, "failed to add morph rule chains", reqInfo, err)
+		return
 	}
 
 	settings.CannedACL = cannedACL
@@ -654,7 +649,7 @@ func (h *handler) GetBucketPolicyHandler(w http.ResponseWriter, r *http.Request)
 		return
 	}
 
-	jsonPolicy, err := h.ape.GetPolicy(reqInfo.Namespace, bktInfo.CID)
+	jsonPolicy, err := h.ape.GetBucketPolicy(reqInfo.Namespace, bktInfo.CID)
 	if err != nil {
 		if strings.Contains(err.Error(), "not found") {
 			err = fmt.Errorf("%w: %s", errors.GetAPIError(errors.ErrNoSuchBucketPolicy), err.Error())
@@ -680,14 +675,7 @@ func (h *handler) DeleteBucketPolicyHandler(w http.ResponseWriter, r *http.Reque
 		return
 	}
 
-	target := engine.NamespaceTarget(reqInfo.Namespace)
-	chainID := getBucketChainID(bktInfo)
-	if err = h.ape.RemoveChain(target, chainID); err != nil {
-		h.logAndSendError(w, "failed to remove morph rule chain", reqInfo, err)
-		return
-	}
-
-	if err = h.ape.DeletePolicy(reqInfo.Namespace, bktInfo.CID); err != nil {
+	if err = h.ape.DeleteBucketPolicy(reqInfo.Namespace, bktInfo.CID, getBucketChainID(bktInfo)); err != nil {
 		h.logAndSendError(w, "failed to delete policy from storage", reqInfo, err)
 		return
 	}
@@ -743,14 +731,8 @@ func (h *handler) PutBucketPolicyHandler(w http.ResponseWriter, r *http.Request)
 		}
 	}
 
-	target := engine.NamespaceTarget(reqInfo.Namespace)
-	if err = h.ape.AddChain(target, s3Chain); err != nil {
-		h.logAndSendError(w, "failed to add morph rule chain", reqInfo, err)
-		return
-	}
-
-	if err = h.ape.PutPolicy(reqInfo.Namespace, bktInfo.CID, jsonPolicy); err != nil {
-		h.logAndSendError(w, "failed to save policy to storage", reqInfo, err)
+	if err = h.ape.PutBucketPolicy(reqInfo.Namespace, bktInfo.CID, jsonPolicy, s3Chain); err != nil {
+		h.logAndSendError(w, "failed to update policy in contract", reqInfo, err)
 		return
 	}
 }
diff --git a/api/handler/acl_test.go b/api/handler/acl_test.go
index dad9d4dc..b0e2f1dc 100644
--- a/api/handler/acl_test.go
+++ b/api/handler/acl_test.go
@@ -1325,7 +1325,7 @@ func TestPutBucketAPE(t *testing.T) {
 	_, err := hc.tp.ContainerEACL(hc.Context(), info.BktInfo.CID)
 	require.ErrorContains(t, err, "not found")
 
-	chains, err := hc.h.ape.ListChains(engine.NamespaceTarget(""))
+	chains, err := hc.h.ape.(*apeMock).ListChains(engine.NamespaceTarget(""))
 	require.NoError(t, err)
 	require.Len(t, chains, 2)
 }
diff --git a/api/handler/api.go b/api/handler/api.go
index c8d0ec79..ad6f3538 100644
--- a/api/handler/api.go
+++ b/api/handler/api.go
@@ -15,7 +15,6 @@ import (
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
 	"go.uber.org/zap"
 )
 
@@ -55,23 +54,10 @@ type (
 
 	// APE is Access Policy Engine that needs to save policy and acl info to different places.
 	APE interface {
-		MorphRuleChainStorage
-		PolicyStorage
-	}
-
-	// MorphRuleChainStorage is a similar to engine.MorphRuleChainStorage
-	// but doesn't know anything about tx.
-	MorphRuleChainStorage interface {
-		AddChain(target engine.Target, c *chain.Chain) error
-		RemoveChain(target engine.Target, chainID chain.ID) error
-		ListChains(target engine.Target) ([]*chain.Chain, error)
-	}
-
-	// PolicyStorage is interface to save intact initial user provided policy.
-	PolicyStorage interface {
-		PutPolicy(namespace string, cnrID cid.ID, policy []byte) error
-		GetPolicy(namespace string, cnrID cid.ID) ([]byte, error)
-		DeletePolicy(namespace string, cnrID cid.ID) error
+		PutBucketPolicy(ns string, cnrID cid.ID, policy []byte, s3Chain *chain.Chain) error
+		DeleteBucketPolicy(ns string, cnrID cid.ID, chainID chain.ID) error
+		GetBucketPolicy(ns string, cnrID cid.ID) ([]byte, error)
+		SaveACLChains(ns string, chains []*chain.Chain) error
 	}
 
 	frostfsIDDisabled struct{}
diff --git a/api/handler/handlers_test.go b/api/handler/handlers_test.go
index ff082f68..c94c9ce5 100644
--- a/api/handler/handlers_test.go
+++ b/api/handler/handlers_test.go
@@ -251,8 +251,27 @@ func (a *apeMock) PutPolicy(namespace string, cnrID cid.ID, policy []byte) error
 	return nil
 }
 
-func (a *apeMock) GetPolicy(namespace string, cnrID cid.ID) ([]byte, error) {
-	policy, ok := a.policyMap[namespace+cnrID.EncodeToString()]
+func (a *apeMock) DeletePolicy(namespace string, cnrID cid.ID) error {
+	delete(a.policyMap, namespace+cnrID.EncodeToString())
+	return nil
+}
+
+func (a *apeMock) PutBucketPolicy(ns string, cnrID cid.ID, policy []byte, s3Chain *chain.Chain) error {
+	if err := a.PutPolicy(ns, cnrID, policy); err != nil {
+		return err
+	}
+	return a.AddChain(engine.NamespaceTarget(ns), s3Chain)
+}
+
+func (a *apeMock) DeleteBucketPolicy(ns string, cnrID cid.ID, chainID chain.ID) error {
+	if err := a.DeletePolicy(ns, cnrID); err != nil {
+		return err
+	}
+	return a.RemoveChain(engine.NamespaceTarget(ns), chainID)
+}
+
+func (a *apeMock) GetBucketPolicy(ns string, cnrID cid.ID) ([]byte, error) {
+	policy, ok := a.policyMap[ns+cnrID.EncodeToString()]
 	if !ok {
 		return nil, errors.New("not found")
 	}
@@ -260,8 +279,13 @@ func (a *apeMock) GetPolicy(namespace string, cnrID cid.ID) ([]byte, error) {
 	return policy, nil
 }
 
-func (a *apeMock) DeletePolicy(namespace string, cnrID cid.ID) error {
-	delete(a.policyMap, namespace+cnrID.EncodeToString())
+func (a *apeMock) SaveACLChains(ns string, chains []*chain.Chain) error {
+	for i := range chains {
+		if err := a.AddChain(engine.NamespaceTarget(ns), chains[i]); err != nil {
+			return err
+		}
+	}
+
 	return nil
 }
 
diff --git a/api/handler/put.go b/api/handler/put.go
index c30745be..a3c06f1a 100644
--- a/api/handler/put.go
+++ b/api/handler/put.go
@@ -29,7 +29,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/eacl"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
-	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
 	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
 	"git.frostfs.info/TrueCloudLab/policy-engine/schema/s3"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
@@ -822,14 +821,10 @@ func (h *handler) CreateBucketHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	h.reqLogger(ctx).Info(logs.BucketIsCreated, zap.Stringer("container_id", bktInfo.CID))
 
-	chainRules := bucketCannedACLToAPERules(cannedACL, reqInfo, key, bktInfo.CID)
-
-	target := engine.NamespaceTarget(reqInfo.Namespace)
-	for _, chainPolicy := range chainRules {
-		if err = h.ape.AddChain(target, chainPolicy); err != nil {
-			h.logAndSendError(w, "failed to add morph rule chain", reqInfo, err, zap.String("chain_id", string(chainPolicy.ID)))
-			return
-		}
+	chains := bucketCannedACLToAPERules(cannedACL, reqInfo, key, bktInfo.CID)
+	if err = h.ape.SaveACLChains(reqInfo.Namespace, chains); err != nil {
+		h.logAndSendError(w, "failed to add morph rule chain", reqInfo, err)
+		return
 	}
 
 	sp := &layer.PutSettingsParams{
diff --git a/internal/frostfs/policy/contract/contract.go b/internal/frostfs/policy/contract/contract.go
index 2296e254..0da24a70 100644
--- a/internal/frostfs/policy/contract/contract.go
+++ b/internal/frostfs/policy/contract/contract.go
@@ -2,9 +2,11 @@ package contract
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"math/big"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-contract/commonclient"
 	policycontract "git.frostfs.info/TrueCloudLab/frostfs-contract/policy"
 	policyclient "git.frostfs.info/TrueCloudLab/frostfs-contract/rpcclient/policy"
 	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/frostfs/policy"
@@ -21,6 +23,7 @@ import (
 type Client struct {
 	actor          *actor.Actor
 	policyContract *policyclient.Contract
+	contractHash   util.Uint160
 }
 
 type Config struct {
@@ -72,6 +75,7 @@ func New(ctx context.Context, cfg Config) (*Client, error) {
 	return &Client{
 		actor:          act,
 		policyContract: policyclient.New(act, contractHash),
+		contractHash:   contractHash,
 	}, nil
 }
 
@@ -130,3 +134,87 @@ func (c *Client) Wait(tx util.Uint256, vub uint32, err error) error {
 	_, err = c.actor.Wait(tx, vub, err)
 	return err
 }
+
+type multiTX struct {
+	contractHash util.Uint160
+	txs          []*commonclient.Transaction
+	err          error
+}
+
+func (m *multiTX) AddChain(entity policycontract.Kind, entityName string, name []byte, chain []byte) {
+	m.wrapCall("addChain", []any{big.NewInt(int64(entity)), entityName, name, chain})
+}
+
+func (m *multiTX) RemoveChain(entity policycontract.Kind, entityName string, name []byte) {
+	m.wrapCall("removeChain", []any{big.NewInt(int64(entity)), entityName, name})
+}
+
+func (m *multiTX) Scripts() ([][]byte, error) {
+	if m.err != nil {
+		return nil, m.err
+	}
+
+	if len(m.txs) == 0 {
+		return nil, errors.New("tx isn't initialized")
+	}
+
+	res := make([][]byte, 0, len(m.txs))
+	for _, tx := range m.txs {
+		script, err := tx.Bytes()
+		if err != nil {
+			return nil, err
+		}
+		res = append(res, script)
+	}
+
+	return res, nil
+}
+
+func (m *multiTX) wrapCall(method string, args []any) {
+	if m.err != nil {
+		return
+	}
+	if len(m.txs) == 0 {
+		m.err = errors.New("multi tx isn't initialized")
+		return
+	}
+
+	err := m.txs[len(m.txs)-1].WrapCall(method, args)
+	if err == nil {
+		return
+	}
+	if !errors.Is(commonclient.ErrTransactionTooLarge, err) {
+		m.err = err
+		return
+	}
+
+	tx := commonclient.NewTransaction(m.contractHash)
+	m.err = tx.WrapCall(method, args)
+	if m.err == nil {
+		m.txs = append(m.txs, tx)
+	}
+}
+
+func (c *Client) StartTx() policy.MultiTransaction {
+	return &multiTX{
+		txs:          []*commonclient.Transaction{commonclient.NewTransaction(c.contractHash)},
+		contractHash: c.contractHash,
+	}
+}
+
+func (c *Client) SendTx(mtx policy.MultiTransaction) error {
+	var err error
+
+	scripts, err := mtx.Scripts()
+	if err != nil {
+		return err
+	}
+
+	for i := range scripts {
+		if _, err = c.actor.Wait(c.actor.SendRun(scripts[i])); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
diff --git a/internal/frostfs/policy/contract/inmemory.go b/internal/frostfs/policy/contract/inmemory.go
index b49efbd4..2b6c637f 100644
--- a/internal/frostfs/policy/contract/inmemory.go
+++ b/internal/frostfs/policy/contract/inmemory.go
@@ -83,6 +83,17 @@ func (c *InMemoryContract) Wait(_ util.Uint256, _ uint32, err error) error {
 	return err
 }
 
+func (c *InMemoryContract) StartTx() policy.MultiTransaction {
+	return &inMemoryTx{operations: make([]func(*InMemoryContract), 0)}
+}
+
+func (c *InMemoryContract) SendTx(tx policy.MultiTransaction) error {
+	for _, operation := range tx.(*inMemoryTx).operations {
+		operation(c)
+	}
+	return nil
+}
+
 func (c *InMemoryContract) getMap(kind policycontract.Kind) *syncedMap {
 	switch kind {
 	case policycontract.IAM:
@@ -95,3 +106,23 @@ func (c *InMemoryContract) getMap(kind policycontract.Kind) *syncedMap {
 		return &syncedMap{data: map[string][]byte{}}
 	}
 }
+
+type inMemoryTx struct {
+	operations []func(contract *InMemoryContract)
+}
+
+func (t *inMemoryTx) AddChain(kind policycontract.Kind, entity string, name []byte, chain []byte) {
+	t.operations = append(t.operations, func(c *InMemoryContract) {
+		_, _, _ = c.AddChain(kind, entity, name, chain)
+	})
+}
+
+func (t *inMemoryTx) RemoveChain(kind policycontract.Kind, entity string, name []byte) {
+	t.operations = append(t.operations, func(c *InMemoryContract) {
+		_, _, _ = c.RemoveChain(kind, entity, name)
+	})
+}
+
+func (t *inMemoryTx) Scripts() ([][]byte, error) {
+	return nil, nil
+}
diff --git a/internal/frostfs/policy/morph_policy_storage.go b/internal/frostfs/policy/morph_policy_storage.go
deleted file mode 100644
index 3db093f7..00000000
--- a/internal/frostfs/policy/morph_policy_storage.go
+++ /dev/null
@@ -1,46 +0,0 @@
-package policy
-
-import (
-	policycontract "git.frostfs.info/TrueCloudLab/frostfs-contract/policy"
-	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/handler"
-	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
-	"go.uber.org/zap"
-)
-
-type MorphPolicyStorage struct {
-	contract Contract
-}
-
-type MorphPolicyStorageConfig struct {
-	Contract Contract
-	Log      *zap.Logger
-}
-
-var _ handler.PolicyStorage = (*MorphPolicyStorage)(nil)
-
-const policyStoragePrefix = 'b'
-
-func NewMorphPolicyStorage(config *MorphPolicyStorageConfig) *MorphPolicyStorage {
-	return &MorphPolicyStorage{
-		contract: config.Contract,
-	}
-}
-
-func (c *MorphPolicyStorage) PutPolicy(namespace string, cnrID cid.ID, policy []byte) error {
-	name := getPolicyStorageName(cnrID)
-	return c.contract.Wait(c.contract.AddChain(policycontract.IAM, namespace, name, policy))
-}
-
-func (c *MorphPolicyStorage) GetPolicy(namespace string, cnrID cid.ID) ([]byte, error) {
-	name := getPolicyStorageName(cnrID)
-	return c.contract.GetChain(policycontract.IAM, namespace, name)
-}
-
-func (c *MorphPolicyStorage) DeletePolicy(namespace string, cnrID cid.ID) error {
-	name := getPolicyStorageName(cnrID)
-	return c.contract.Wait(c.contract.RemoveChain(policycontract.IAM, namespace, name))
-}
-
-func getPolicyStorageName(cnrID cid.ID) []byte {
-	return append([]byte{policyStoragePrefix}, cnrID[:]...)
-}
diff --git a/internal/frostfs/policy/morph_rule_chain_storage.go b/internal/frostfs/policy/morph_rule_chain_storage.go
index 38df353c..f1ec9c42 100644
--- a/internal/frostfs/policy/morph_rule_chain_storage.go
+++ b/internal/frostfs/policy/morph_rule_chain_storage.go
@@ -5,8 +5,8 @@ import (
 
 	policycontract "git.frostfs.info/TrueCloudLab/frostfs-contract/policy"
 	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/cache"
-	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/handler"
 	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/logs"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
 	"github.com/nspcc-dev/neo-go/pkg/util"
@@ -25,10 +25,9 @@ type MorphRuleChainStorageConfig struct {
 	Log      *zap.Logger
 }
 
-var (
-	_ engine.MorphRuleChainStorage  = (*MorphRuleChainStorage)(nil)
-	_ handler.MorphRuleChainStorage = (*MorphRuleChainStorage)(nil)
-)
+var _ engine.MorphRuleChainStorage = (*MorphRuleChainStorage)(nil)
+
+const bucketPolicyPrefix = 'b'
 
 func NewMorphRuleChainStorage(config *MorphRuleChainStorageConfig) *MorphRuleChainStorage {
 	return &MorphRuleChainStorage{
@@ -38,26 +37,12 @@ func NewMorphRuleChainStorage(config *MorphRuleChainStorageConfig) *MorphRuleCha
 	}
 }
 
-func (c *MorphRuleChainStorage) AddChain(target engine.Target, policyChain *chain.Chain) error {
-	return c.contract.Wait(c.AddMorphRuleChain(chain.S3, target, policyChain))
+func (c *MorphRuleChainStorage) AddMorphRuleChain(chain.Name, engine.Target, *chain.Chain) (util.Uint256, uint32, error) {
+	panic("should never be called")
 }
 
-func (c *MorphRuleChainStorage) RemoveChain(target engine.Target, chainID chain.ID) error {
-	return c.contract.Wait(c.RemoveMorphRuleChain(chain.S3, target, chainID))
-}
-
-func (c *MorphRuleChainStorage) ListChains(target engine.Target) ([]*chain.Chain, error) {
-	return c.ListMorphRuleChains(chain.S3, target)
-}
-
-func (c *MorphRuleChainStorage) AddMorphRuleChain(name chain.Name, target engine.Target, policyChain *chain.Chain) (util.Uint256, uint32, error) {
-	c.cache.Delete(cache.MorphPolicyCacheKey{Target: target, Name: name})
-	return c.contract.AddChain(getKind(target), target.Name, getName(name, policyChain.ID), policyChain.Bytes())
-}
-
-func (c *MorphRuleChainStorage) RemoveMorphRuleChain(name chain.Name, target engine.Target, chainID chain.ID) (util.Uint256, uint32, error) {
-	c.cache.Delete(cache.MorphPolicyCacheKey{Target: target, Name: name})
-	return c.contract.RemoveChain(getKind(target), target.Name, getName(name, chainID))
+func (c *MorphRuleChainStorage) RemoveMorphRuleChain(chain.Name, engine.Target, chain.ID) (util.Uint256, uint32, error) {
+	panic("should never be called")
 }
 
 func (c *MorphRuleChainStorage) ListMorphRuleChains(name chain.Name, target engine.Target) ([]*chain.Chain, error) {
@@ -88,6 +73,42 @@ func (c *MorphRuleChainStorage) ListMorphRuleChains(name chain.Name, target engi
 	return list, nil
 }
 
+func (c *MorphRuleChainStorage) PutBucketPolicy(ns string, cnrID cid.ID, policy []byte, s3Chain *chain.Chain) error {
+	c.cache.Delete(cache.MorphPolicyCacheKey{Target: engine.NamespaceTarget(ns), Name: chain.S3})
+
+	tx := c.contract.StartTx()
+	tx.AddChain(policycontract.Namespace, ns, s3Chain.ID, s3Chain.Bytes())
+	tx.AddChain(policycontract.IAM, ns, getBucketPolicyName(cnrID), policy)
+
+	return c.contract.SendTx(tx)
+}
+
+func (c *MorphRuleChainStorage) DeleteBucketPolicy(ns string, cnrID cid.ID, chainID chain.ID) error {
+	c.cache.Delete(cache.MorphPolicyCacheKey{Target: engine.NamespaceTarget(ns), Name: chain.S3})
+
+	tx := c.contract.StartTx()
+	tx.RemoveChain(policycontract.Namespace, ns, chainID)
+	tx.RemoveChain(policycontract.IAM, ns, getBucketPolicyName(cnrID))
+
+	return c.contract.SendTx(tx)
+}
+
+func (c *MorphRuleChainStorage) GetBucketPolicy(ns string, cnrID cid.ID) ([]byte, error) {
+	return c.contract.GetChain(policycontract.IAM, ns, getBucketPolicyName(cnrID))
+}
+
+func (c *MorphRuleChainStorage) SaveACLChains(ns string, chains []*chain.Chain) error {
+	c.cache.Delete(cache.MorphPolicyCacheKey{Target: engine.NamespaceTarget(ns), Name: chain.S3})
+	c.cache.Delete(cache.MorphPolicyCacheKey{Target: engine.NamespaceTarget(ns), Name: chain.Ingress})
+
+	tx := c.contract.StartTx()
+	for i := range chains {
+		tx.AddChain(policycontract.Namespace, ns, chains[i].ID, chains[i].Bytes())
+	}
+
+	return c.contract.SendTx(tx)
+}
+
 func getKind(target engine.Target) policycontract.Kind {
 	var kind policycontract.Kind = policycontract.Container
 	if target.Type != engine.Container {
@@ -96,6 +117,7 @@ func getKind(target engine.Target) policycontract.Kind {
 
 	return kind
 }
-func getName(name chain.Name, chainID chain.ID) []byte {
-	return append([]byte(name), []byte(chainID)...)
+
+func getBucketPolicyName(cnrID cid.ID) []byte {
+	return append([]byte{bucketPolicyPrefix}, cnrID[:]...)
 }
diff --git a/internal/frostfs/policy/storage.go b/internal/frostfs/policy/storage.go
index b53fee78..4426fde6 100644
--- a/internal/frostfs/policy/storage.go
+++ b/internal/frostfs/policy/storage.go
@@ -9,18 +9,15 @@ import (
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine/inmemory"
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/resource"
-	"github.com/nspcc-dev/neo-go/pkg/util"
 	"go.uber.org/zap"
 )
 
 type Storage struct {
 	router engine.ChainRouter
 
-	morph handler.MorphRuleChainStorage
+	morph *MorphRuleChainStorage
 
 	local engine.LocalOverrideStorage
-
-	policy handler.PolicyStorage
 }
 
 type StorageConfig struct {
@@ -29,18 +26,23 @@ type StorageConfig struct {
 	Log      *zap.Logger
 }
 
+type MultiTransaction interface {
+	AddChain(entity policycontract.Kind, entityName string, name []byte, chain []byte)
+	RemoveChain(entity policycontract.Kind, entityName string, name []byte)
+	Scripts() ([][]byte, error)
+}
+
 type Contract interface {
-	AddChain(kind policycontract.Kind, entity string, name []byte, chain []byte) (util.Uint256, uint32, error)
-	GetChain(kind policycontract.Kind, entity string, name []byte) ([]byte, error)
-	RemoveChain(kind policycontract.Kind, entity string, name []byte) (util.Uint256, uint32, error)
-	ListChains(kind policycontract.Kind, entity string, name []byte) ([][]byte, error)
-	Wait(tx util.Uint256, vub uint32, err error) error
+	GetChain(entity policycontract.Kind, entityName string, name []byte) ([]byte, error)
+	ListChains(entity policycontract.Kind, entityName string, prefix []byte) ([][]byte, error)
+
+	StartTx() MultiTransaction
+	SendTx(transaction MultiTransaction) error
 }
 
 var _ handler.APE = (*Storage)(nil)
 
 func NewStorage(cfg StorageConfig) *Storage {
-	// todo use thread safe inmemory https://git.frostfs.info/TrueCloudLab/policy-engine/issues/35
 	local := inmemory.NewInmemoryLocalStorage()
 
 	morph := NewMorphRuleChainStorage(&MorphRuleChainStorageConfig{
@@ -49,16 +51,10 @@ func NewStorage(cfg StorageConfig) *Storage {
 		Log:      cfg.Log,
 	})
 
-	policyStorage := NewMorphPolicyStorage(&MorphPolicyStorageConfig{
-		Contract: cfg.Contract,
-		Log:      cfg.Log,
-	})
-
 	return &Storage{
 		router: engine.NewDefaultChainRouterWithLocalOverrides(morph, local),
 		morph:  morph,
 		local:  local,
-		policy: policyStorage,
 	}
 }
 
@@ -70,26 +66,23 @@ func (s *Storage) LocalStorage() engine.LocalOverrideStorage {
 	return s.local
 }
 
-func (s *Storage) AddChain(target engine.Target, policyChain *chain.Chain) error {
-	return s.morph.AddChain(target, policyChain)
+func (s *Storage) PutBucketPolicy(ns string, cnrID cid.ID, policy []byte, s3Chain *chain.Chain) error {
+	return s.morph.PutBucketPolicy(ns, cnrID, policy, s3Chain)
 }
 
-func (s *Storage) RemoveChain(target engine.Target, chainID chain.ID) error {
-	return s.morph.RemoveChain(target, chainID)
+func (s *Storage) DeleteBucketPolicy(ns string, cnrID cid.ID, chainID chain.ID) error {
+	return s.morph.DeleteBucketPolicy(ns, cnrID, chainID)
 }
 
-func (s *Storage) ListChains(target engine.Target) ([]*chain.Chain, error) {
-	return s.morph.ListChains(target)
+func (s *Storage) GetBucketPolicy(ns string, cnrID cid.ID) ([]byte, error) {
+	return s.morph.GetBucketPolicy(ns, cnrID)
 }
 
-func (s *Storage) PutPolicy(namespace string, cnrID cid.ID, policy []byte) error {
-	return s.policy.PutPolicy(namespace, cnrID, policy)
+func (s *Storage) SaveACLChains(ns string, chains []*chain.Chain) error {
+	return s.morph.SaveACLChains(ns, chains)
 }
 
-func (s *Storage) GetPolicy(namespace string, cnrID cid.ID) ([]byte, error) {
-	return s.policy.GetPolicy(namespace, cnrID)
-}
-
-func (s *Storage) DeletePolicy(namespace string, cnrID cid.ID) error {
-	return s.policy.DeletePolicy(namespace, cnrID)
-}
+//
+//func (s *Storage) ListChains(target engine.Target) ([]*chain.Chain, error) {
+//	return s.morph.ListMorphRuleChains(target)
+//}
diff --git a/internal/logs/logs.go b/internal/logs/logs.go
index 8a316bf2..b542963a 100644
--- a/internal/logs/logs.go
+++ b/internal/logs/logs.go
@@ -145,4 +145,5 @@ const (
 	CouldNotCloseRequestBody                             = "could not close request body"
 	BucketOwnerKeyIsMissing                              = "bucket owner key is missing"
 	SettingsNodeInvalidOwnerKey                          = "settings node: invalid owner key"
+	FailedToSendTransaction                              = "failed to send transaction"
 )