diff --git a/conf/loopchain_conf.json b/conf/loopchain_conf.json
index bd53d5605..14926b71d 100644
--- a/conf/loopchain_conf.json
+++ b/conf/loopchain_conf.json
@@ -10,8 +10,6 @@
         "0x2": 1,
         "0x3": 1
       },
-      "store_valid_transaction_only": true,
-      "send_tx_type": 2,
       "load_cert": false,
       "consensus_cert_use": false,
       "tx_cert_use": false,
diff --git a/loopchain/baseservice/broadcast_scheduler.py b/loopchain/baseservice/broadcast_scheduler.py
index e37d8914d..786b2e367 100644
--- a/loopchain/baseservice/broadcast_scheduler.py
+++ b/loopchain/baseservice/broadcast_scheduler.py
@@ -332,8 +332,6 @@ def __handler_create_tx(self, create_tx_param):
         # logging.debug(f"Broadcast create_tx....")
         try:
             tx_item = TxItem.create_tx_item(create_tx_param, self.__channel)
-            # util.logger.spam(f"broadcast_process:__handler_create_tx "
-            #                  f"send_tx_type({create_tx_param.meta[Transaction.SEND_TX_TYPE_KEY]})")
         except Exception as e:
             logging.warning(f"tx in channel({self.__channel})")
             logging.warning(f"__handler_create_tx: meta({create_tx_param})")
diff --git a/loopchain/blockchain/blockchain.py b/loopchain/blockchain/blockchain.py
index ef6dce498..88f263d1c 100644
--- a/loopchain/blockchain/blockchain.py
+++ b/loopchain/blockchain/blockchain.py
@@ -58,10 +58,8 @@ def __init__(self, blockchain_db=None, channel_name=None):
         self.__last_block = None
         # last unconfirmed block that the leader broadcast.
         self.last_unconfirmed_block = None
-        self.__save_tx_by_address_strategy = None
         self.__channel_name = channel_name
         self.__peer_id = ChannelProperty().peer_id
-        self.__set_send_tx_type(conf.CHANNEL_OPTION[channel_name]["send_tx_type"])
 
         # block db has [ block_hash - block | block_height - block_hash | BlockChain.LAST_BLOCK_KEY - block_hash ]
         self.__confirmed_block_db = blockchain_db
@@ -91,12 +89,6 @@ def __init__(self, blockchain_db=None, channel_name=None):
         for tx_version, tx_hash_version in channel_option.get("hash_versions", {}).items():
             self.__tx_versioner.hash_generator_versions[tx_version] = tx_hash_version
 
-    def __set_send_tx_type(self, send_tx_type):
-        if send_tx_type == conf.SendTxType.icx:
-            self.__save_tx_by_address_strategy = self.__save_tx_by_address
-        else:
-            self.__save_tx_by_address_strategy = self.__save_tx_by_address_pass
-
     def close_blockchain_db(self):
         del self.__confirmed_block_db
         self.__confirmed_block_db = None
@@ -111,12 +103,6 @@ def total_tx(self):
 
     @property
     def last_block(self) -> Block:
-        try:
-            logging.debug(f"ENGINE-303 blockchain last_block: "
-                          f"{self.__last_block.header.height}, "
-                          f"{self.__last_block.header.hash.hex()}")
-        except:
-            pass
         return self.__last_block
 
     @property
@@ -407,7 +393,7 @@ def __add_tx_to_block_db(self, block, invoke_results):
             # util.logger.spam(f"pop tx from queue:{tx_hash}")
 
             if block.header.height > 0:
-                self.__save_tx_by_address_strategy(tx)
+                self.__save_tx_by_address(tx)
 
         self.__save_invoke_result_block_height(block.header.height)
 
@@ -443,9 +429,6 @@ def __save_tx_by_address(self, tx: 'Transaction'):
         address = tx.from_address.hex_hx()
         return self.add_tx_to_list_by_address(address, tx.hash.hex())
 
-    def __save_tx_by_address_pass(self, tx):
-        return True
-
     @staticmethod
     def __get_tx_list_key(address, index):
         return conf.TX_LIST_ADDRESS_PREFIX + (address + str(index)).encode(encoding=conf.HASH_KEY_ENCODING)
diff --git a/loopchain/channel/channel_inner_service.py b/loopchain/channel/channel_inner_service.py
index 98241f20d..84034ddbb 100644
--- a/loopchain/channel/channel_inner_service.py
+++ b/loopchain/channel/channel_inner_service.py
@@ -115,17 +115,11 @@ async def get_status(self):
         block_manager = self._channel_service.block_manager
         status_data["made_block_count"] = block_manager.made_block_count
         unconfirmed_block_height = None
-        if block_manager.get_blockchain().last_block is not None:
-            block_height = block_manager.get_blockchain().last_block.header.height
-            if block_manager.get_blockchain().last_unconfirmed_block:
-                unconfirmed_block_height = block_manager.get_blockchain().last_unconfirmed_block.header.height
-            logging.debug("getstatus block hash(block_manager.get_blockchain().last_block.block_hash): "
-                          + str(block_manager.get_blockchain().last_block.header.hash.hex()))
-            logging.debug("getstatus block hash(block_manager.get_blockchain().block_height): "
-                          + str(block_manager.get_blockchain().block_height))
-            logging.debug("getstatus block height: " + str(block_height))
-            # Score와 상관없이 TransactionTx는 블럭매니저가 관리 합니다.
+        last_block = block_manager.get_blockchain().last_block
+        if last_block:
+            block_height = last_block.header.height
             total_tx = block_manager.get_total_tx()
+            logging.debug(f"last_block height({block_height}), hash({last_block.header.hash})")
 
         status_data["status"] = block_manager.service_status
         status_data["state"] = self._channel_service.state_machine.state
diff --git a/loopchain/channel/channel_service.py b/loopchain/channel/channel_service.py
index 131603d81..19bcae4f4 100644
--- a/loopchain/channel/channel_service.py
+++ b/loopchain/channel/channel_service.py
@@ -252,10 +252,7 @@ async def subscribe_network(self):
 
     def __init_peer_auth(self):
         try:
-            channel_authorization = IcxAuthorization if util.channel_use_icx(ChannelProperty().name) \
-                else PeerAuthorization
-
-            self.__peer_auth = channel_authorization(ChannelProperty().name)
+            self.__peer_auth = IcxAuthorization(ChannelProperty().name)
 
         except Exception as e:
             logging.exception(f"peer auth init fail cause : {e}")
@@ -354,17 +351,10 @@ async def __run_score_container(self):
             )
             self.__score_container = CommonSubprocess(process_args)
 
-        if util.channel_use_icx(ChannelProperty().name):
-            await StubCollection().create_icon_score_stub(ChannelProperty().name)
-            await StubCollection().icon_score_stubs[ChannelProperty().name].connect()
-            await StubCollection().icon_score_stubs[ChannelProperty().name].async_task().hello()
-            return None
-        else:
-            await StubCollection().create_score_stub(ChannelProperty().name, ChannelProperty().score_package)
-            await StubCollection().score_stubs[ChannelProperty().name].connect()
-            await StubCollection().score_stubs[ChannelProperty().name].async_task().hello()
-
-            return await self.__load_score()
+        await StubCollection().create_icon_score_stub(ChannelProperty().name)
+        await StubCollection().icon_score_stubs[ChannelProperty().name].connect()
+        await StubCollection().icon_score_stubs[ChannelProperty().name].async_task().hello()
+        return None
 
     async def __load_score(self):
         channel_name = ChannelProperty().name
@@ -826,22 +816,10 @@ def score_write_precommit_state(self, block: Block):
         return True
 
     def score_remove_precommit_state(self, block: Block):
-        if not util.channel_use_icx(ChannelProperty().name):
-            request = {
-                "blockHeight": block.height,
-                "blockHash": block.block_hash,
-            }
-            request = convert_params(request, ParamType.remove_precommit_state)
-
-            stub = StubCollection().icon_score_stubs[ChannelProperty().name]
-            stub.sync_task().remove_precommit_state(request)
-
-            return True
-        else:
-            invoke_fail_info = json.dumps({"block_height": block.height, "block_hash": block.block_hash})
-            stub = StubCollection().score_stubs[ChannelProperty().name]
-            stub.sync_task().remove_precommit_state(invoke_fail_info)
-            return True
+        invoke_fail_info = json.dumps({"block_height": block.height, "block_hash": block.block_hash})
+        stub = StubCollection().score_stubs[ChannelProperty().name]
+        stub.sync_task().remove_precommit_state(invoke_fail_info)
+        return True
 
     def get_object_has_queue_by_consensus(self):
         if conf.CONSENSUS_ALGORITHM == conf.ConsensusAlgorithm.lft:
diff --git a/loopchain/launcher.py b/loopchain/launcher.py
index 2d089a7ae..8afd3c506 100644
--- a/loopchain/launcher.py
+++ b/loopchain/launcher.py
@@ -149,7 +149,7 @@ def start_as_score(args):
     amqp_target = args.amqp_target or conf.AMQP_TARGET
     amqp_key = args.amqp_key or conf.AMQP_KEY
 
-    if util.channel_use_icx(channel) and conf.USE_EXTERNAL_SCORE:
+    if conf.USE_EXTERNAL_SCORE:
         if conf.EXTERNAL_SCORE_RUN_IN_LAUNCHER:
             from iconservice.icon_service import IconService
             from iconservice.icon_config import default_icon_config
diff --git a/loopchain/peer/block_manager.py b/loopchain/peer/block_manager.py
index b8aab030f..face59ced 100644
--- a/loopchain/peer/block_manager.py
+++ b/loopchain/peer/block_manager.py
@@ -43,8 +43,7 @@ def __init__(self, name: str, channel_manager, peer_id, channel_name, level_db_i
 
         self.__channel_service: ChannelService = channel_manager
         self.__channel_name = channel_name
-        self.__pre_validate_strategy = None
-        self.__set_send_tx_type(conf.CHANNEL_OPTION[channel_name]["send_tx_type"])
+        self.__pre_validate_strategy = self.__pre_validate
         self.__peer_id = peer_id
         self.__level_db = None
         self.__level_db_path = ""
@@ -73,12 +72,6 @@ def __init__(self, name: str, channel_manager, peer_id, channel_name, level_db_i
         self.name = name
         self.__service_status = status_code.Service.online
 
-    def __set_send_tx_type(self, send_tx_type):
-        if send_tx_type == conf.SendTxType.icx:
-            self.__pre_validate_strategy = self.__pre_validate
-        else:
-            self.__pre_validate_strategy = self.__pre_validate_pass
-
     @property
     def channel_name(self):
         return self.__channel_name
diff --git a/loopchain/peer/peer_outer_service.py b/loopchain/peer/peer_outer_service.py
index 914f43c4b..a0dc3d90c 100644
--- a/loopchain/peer/peer_outer_service.py
+++ b/loopchain/peer/peer_outer_service.py
@@ -191,7 +191,7 @@ def Request(self, request, context):
 
     def __status_update(self, channel, future):
         # update peer outer status cache by channel
-        util.logger.spam(f"peer_outer_service:__status_update channel({channel}) result({future.result()})")
+        util.logger.spam(f"status_update channel({channel}) result({future.result()})")
         self.__status_cache_update_time[channel] = datetime.datetime.now()
         self.peer_service.status_cache[channel] = future.result()
 
@@ -252,10 +252,7 @@ def GetStatus(self, request, context):
         stubs = {
             "peer": StubCollection().peer_stub,
             "channel": StubCollection().channel_stubs.get(channel_name),
-            "score":
-                StubCollection().icon_score_stubs.get(channel_name)
-                if util.channel_use_icx(channel_name) else
-                StubCollection().score_stubs.get(channel_name)
+            "score": StubCollection().icon_score_stubs.get(channel_name)
         }
 
         mq_status_data = {}
diff --git a/loopchain/peer/peer_service.py b/loopchain/peer/peer_service.py
index bb0247d53..42802b663 100644
--- a/loopchain/peer/peer_service.py
+++ b/loopchain/peer/peer_service.py
@@ -198,8 +198,7 @@ def __get_channel_infos(self):
             channels = json.loads(response.channel_infos)
         else:
             response = self.stub_to_radiostation.call_in_times(method_name="GetChannelInfos")
-            channels = {channel: value for channel, value in response["channel_infos"].items()
-                        if util.channel_use_icx(channel)}
+            channels = {channel: value for channel, value in response["channel_infos"].items()}
 
         return channels
 
@@ -235,21 +234,7 @@ def __run_rest_services(self, port):
     def __make_peer_id(self):
         """네트워크에서 Peer 를 식별하기 위한 UUID를 level db 에 생성한다.
         """
-        if util.channel_use_icx(conf.LOOPCHAIN_DEFAULT_CHANNEL):
-            self.__peer_id = IcxAuthorization(conf.LOOPCHAIN_DEFAULT_CHANNEL).address
-        else:
-            try:
-                uuid_bytes = bytes(self.__level_db.Get(conf.LEVEL_DB_KEY_FOR_PEER_ID))
-                peer_id = uuid.UUID(bytes=uuid_bytes)
-            except KeyError:  # It's first Run
-                peer_id = None
-
-            if peer_id is None:
-                peer_id = uuid.uuid1()
-                logging.info("make new peer_id: " + str(peer_id))
-                self.__level_db.Put(conf.LEVEL_DB_KEY_FOR_PEER_ID, peer_id.bytes)
-
-            self.__peer_id = str(peer_id)
+        self.__peer_id = IcxAuthorization(conf.LOOPCHAIN_DEFAULT_CHANNEL).address
 
         logger_preset = loggers.get_preset()
         logger_preset.peer_id = self.peer_id
@@ -407,7 +392,4 @@ async def ready_tasks(self):
         for channel_name, channel_info in self.__channel_infos.items():
             await StubCollection().create_channel_stub(channel_name)
 
-            if util.channel_use_icx(channel_name):
-                await StubCollection().create_icon_score_stub(channel_name)
-            else:
-                await StubCollection().create_score_stub(channel_name, channel_info['score_package'])
+            await StubCollection().create_icon_score_stub(channel_name)
diff --git a/loopchain/rest_server/peer_service_stub.py b/loopchain/rest_server/peer_service_stub.py
index f9d95b2e0..6f903e655 100644
--- a/loopchain/rest_server/peer_service_stub.py
+++ b/loopchain/rest_server/peer_service_stub.py
@@ -66,10 +66,7 @@ def get_last_block_hash(self, channel: str) -> str:
     def get_block(self, channel: str, block_hash: str= "", block_height: int=-1):
         block_data_filter = "prev_block_hash, height, block_hash, merkle_tree_root_hash," \
                             " time_stamp, peer_id, signature"
-        if conf.CHANNEL_OPTION[channel]['send_tx_type'] == conf.SendTxType.icx:
-            tx_data_filter = "icx_origin_data"
-        else:
-            tx_data_filter = "tx_hash, timestamp, data_string, peer_id"
+        tx_data_filter = "icx_origin_data"
 
         response = self.call("GetBlock",
                              loopchain_pb2.GetBlockRequest(
diff --git a/loopchain/utils/__init__.py b/loopchain/utils/__init__.py
index 2a2599643..0b748dec9 100644
--- a/loopchain/utils/__init__.py
+++ b/loopchain/utils/__init__.py
@@ -343,10 +343,6 @@ def get_private_ip():
         return get_private_ip3()
 
 
-def channel_use_icx(channel):
-    return conf.CHANNEL_OPTION[channel]['send_tx_type'] == conf.SendTxType.icx
-
-
 def dict_to_binary(the_dict):
     return str.encode(json.dumps(the_dict))
 
diff --git a/loopchain/utils/json_rpc.py b/loopchain/utils/json_rpc.py
index cd8f5084a..a962073b6 100644
--- a/loopchain/utils/json_rpc.py
+++ b/loopchain/utils/json_rpc.py
@@ -119,10 +119,7 @@ async def get_block_by_params(block_height=None, block_hash="", with_commit_stat
     channel_name = conf.LOOPCHAIN_DEFAULT_CHANNEL
     block_data_filter = "prev_block_hash, height, block_hash, merkle_tree_root_hash," \
                         " time_stamp, peer_id, signature"
-    if conf.CHANNEL_OPTION[channel_name]['send_tx_type'] == conf.SendTxType.icx:
-        tx_data_filter = "icx_origin_data"
-    else:
-        tx_data_filter = "tx_hash, timestamp, data_string, peer_id"
+    tx_data_filter = "icx_origin_data"
     channel_stub = StubCollection().channel_stubs[channel_name]
     response_code, block_hash, block_data_json, tx_data_json_list = \
         await channel_stub.async_task().get_block(
diff --git a/testcase/unittest/test_configure.py b/testcase/unittest/test_configure.py
index e56fd0096..fccbff149 100644
--- a/testcase/unittest/test_configure.py
+++ b/testcase/unittest/test_configure.py
@@ -85,8 +85,6 @@ def test_save_and_restore_user_configure(self):
         conf.DISABLE_V1_API = False
         conf.CHANNEL_OPTION = {
             conf.LOOPCHAIN_DEFAULT_CHANNEL: {
-                "store_valid_transaction_only": True,
-                "send_tx_type": conf.SendTxType.icx,
                 "load_cert": False,
                 "consensus_cert_use": False,
                 "tx_cert_use": False,
@@ -96,8 +94,6 @@ def test_save_and_restore_user_configure(self):
                 "private_password": b'test'
             },
             conf.LOOPCHAIN_TEST_CHANNEL: {
-                "store_valid_transaction_only": False,
-                "send_tx_type": conf.SendTxType.pickle,
                 "load_cert": False,
                 "consensus_cert_use": False,
                 "tx_cert_use": False,