diff --git a/ydb/core/kqp/gateway/behaviour/tablestore/manager.cpp b/ydb/core/kqp/gateway/behaviour/tablestore/manager.cpp
index 844ef19344db..a221a60ffd70 100644
--- a/ydb/core/kqp/gateway/behaviour/tablestore/manager.cpp
+++ b/ydb/core/kqp/gateway/behaviour/tablestore/manager.cpp
@@ -31,6 +31,9 @@ NThreading::TFuture<TTableStoreManager::TYqlConclusionStatus> TTableStoreManager
             return NThreading::MakeFuture<TYqlConclusionStatus>(TYqlConclusionStatus::Fail("not implemented"));
         case EActivityType::Alter:
         try {
+            if (!AppData()->ColumnShardConfig.GetAlterObjectEnabled()) {
+                return NThreading::MakeFuture<TYqlConclusionStatus>(TYqlConclusionStatus::Fail("ALTER OBJECT is disabled for column tables"));
+            }
             auto actionName = settings.GetFeaturesExtractor().Extract("ACTION");
             if (!actionName) {
                 return NThreading::MakeFuture<TYqlConclusionStatus>(TYqlConclusionStatus::Fail("can't find ACTION parameter"));
diff --git a/ydb/core/kqp/ut/olap/aggregations_ut.cpp b/ydb/core/kqp/ut/olap/aggregations_ut.cpp
index dfa8fbd078fd..d8d884555728 100644
--- a/ydb/core/kqp/ut/olap/aggregations_ut.cpp
+++ b/ydb/core/kqp/ut/olap/aggregations_ut.cpp
@@ -13,7 +13,9 @@ namespace NKikimr::NKqp {
 
 Y_UNIT_TEST_SUITE(KqpOlapAggregations) {
     Y_UNIT_TEST(Aggregation) {
-        auto settings = TKikimrSettings()
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings().SetAppConfig(appConfig)
             .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
diff --git a/ydb/core/kqp/ut/olap/blobs_sharing_ut.cpp b/ydb/core/kqp/ut/olap/blobs_sharing_ut.cpp
index 4aadd5af93c8..a24b770abe5e 100644
--- a/ydb/core/kqp/ut/olap/blobs_sharing_ut.cpp
+++ b/ydb/core/kqp/ut/olap/blobs_sharing_ut.cpp
@@ -69,9 +69,10 @@ Y_UNIT_TEST_SUITE(KqpOlapBlobsSharing) {
     };
 
     TKikimrSettings GetKikimrSettings() {
-        NKikimrConfig::TFeatureFlags featureFlags;
-        featureFlags.SetEnableAlterShardingInColumnShard(true);
-        return TKikimrSettings().SetWithSampleTables(false).SetFeatureFlags(featureFlags);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        appConfig.MutableFeatureFlags()->SetEnableAlterShardingInColumnShard(true);
+        return TKikimrSettings().SetWithSampleTables(false).SetAppConfig(appConfig);
     }
 
     class TSharingDataTestCase {
diff --git a/ydb/core/kqp/ut/olap/indexes_ut.cpp b/ydb/core/kqp/ut/olap/indexes_ut.cpp
index 0f4595691198..35836da0ea8d 100644
--- a/ydb/core/kqp/ut/olap/indexes_ut.cpp
+++ b/ydb/core/kqp/ut/olap/indexes_ut.cpp
@@ -15,7 +15,9 @@ namespace NKikimr::NKqp {
 
 Y_UNIT_TEST_SUITE(KqpOlapIndexes) {
     Y_UNIT_TEST(IndexesActualization) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
@@ -96,7 +98,9 @@ Y_UNIT_TEST_SUITE(KqpOlapIndexes) {
     }
 
     Y_UNIT_TEST(CountMinSketchIndex) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
@@ -239,7 +243,11 @@ Y_UNIT_TEST_SUITE(KqpOlapIndexes) {
     }
 
     Y_UNIT_TEST(SchemeActualizationOnceOnStart) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        NKikimrConfig::TAppConfig appConfig;
+            appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+            auto settings = TKikimrSettings()
+                .SetAppConfig(appConfig)
+                .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
@@ -340,6 +348,7 @@ Y_UNIT_TEST_SUITE(KqpOlapIndexes) {
         TTestIndexesScenario& Initialize() {
             Settings = TKikimrSettings().SetWithSampleTables(false);
             Settings.AppConfig.MutableColumnShardConfig()->SetReaderClassName("SIMPLE");
+            Settings.AppConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
             Kikimr = std::make_unique<TKikimrRunner>(Settings);
             return *this;
         }
@@ -552,7 +561,9 @@ Y_UNIT_TEST_SUITE(KqpOlapIndexes) {
     }
 
     Y_UNIT_TEST(IndexesModificationError) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         TLocalHelper(kikimr).CreateTestOlapTable();
diff --git a/ydb/core/kqp/ut/olap/kqp_olap_ut.cpp b/ydb/core/kqp/ut/olap/kqp_olap_ut.cpp
index 4b8b8992dabf..864742b6117f 100644
--- a/ydb/core/kqp/ut/olap/kqp_olap_ut.cpp
+++ b/ydb/core/kqp/ut/olap/kqp_olap_ut.cpp
@@ -2640,7 +2640,9 @@ Y_UNIT_TEST_SUITE(KqpOlap) {
     }
 
     Y_UNIT_TEST(CompactionPlanner) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         TLocalHelper(kikimr).CreateTestOlapTable();
@@ -2724,7 +2726,9 @@ Y_UNIT_TEST_SUITE(KqpOlap) {
     }
 
     Y_UNIT_TEST(MetadataMemoryManager) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         TLocalHelper(kikimr).CreateTestOlapTable();
@@ -2781,7 +2785,9 @@ Y_UNIT_TEST_SUITE(KqpOlap) {
     }
 
     Y_UNIT_TEST(NormalizeAbsentColumn) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         TLocalHelper testHelper(kikimr);
 
diff --git a/ydb/core/kqp/ut/olap/sparsed_ut.cpp b/ydb/core/kqp/ut/olap/sparsed_ut.cpp
index 76ec86c974ff..6d78fb962d2c 100644
--- a/ydb/core/kqp/ut/olap/sparsed_ut.cpp
+++ b/ydb/core/kqp/ut/olap/sparsed_ut.cpp
@@ -16,7 +16,15 @@ Y_UNIT_TEST_SUITE(KqpOlapSparsed) {
 
     class TSparsedDataTest {
     private:
-        const TKikimrSettings Settings = TKikimrSettings().SetWithSampleTables(false);
+        static NKikimrConfig::TAppConfig GetAppConfig() {
+            NKikimrConfig::TAppConfig config;
+            config.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+            return config;
+        }
+
+        const TKikimrSettings Settings = TKikimrSettings()
+            .SetAppConfig(GetAppConfig())
+            .SetWithSampleTables(false);
         TKikimrRunner Kikimr;
         NKikimr::NYDBTest::TControllers::TGuard<NKikimr::NYDBTest::NColumnShard::TController> CSController;
         const TString StoreName;
@@ -304,7 +312,9 @@ Y_UNIT_TEST_SUITE(KqpOlapSparsed) {
     }
 
     Y_UNIT_TEST(AccessorActualization) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
 
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
diff --git a/ydb/core/kqp/ut/olap/statistics_ut.cpp b/ydb/core/kqp/ut/olap/statistics_ut.cpp
index 094fefbd4028..ac6744640449 100644
--- a/ydb/core/kqp/ut/olap/statistics_ut.cpp
+++ b/ydb/core/kqp/ut/olap/statistics_ut.cpp
@@ -8,7 +8,9 @@ Y_UNIT_TEST_SUITE(KqpOlapStatistics) {
     Y_UNIT_TEST(StatsUsage) {
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
         {
-            auto settings = TKikimrSettings().SetWithSampleTables(false);
+            NKikimrConfig::TAppConfig appConfig;
+            appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+            auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
             TKikimrRunner kikimr(settings);
             Tests::NCommon::TLoggerInit(kikimr).Initialize();
             TTypedLocalHelper helper("Utf8", kikimr);
@@ -49,7 +51,9 @@ Y_UNIT_TEST_SUITE(KqpOlapStatistics) {
     Y_UNIT_TEST(StatsUsageNotPK) {
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
         {
-            auto settings = TKikimrSettings().SetWithSampleTables(false);
+            NKikimrConfig::TAppConfig appConfig;
+            appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+            auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
             TKikimrRunner kikimr(settings);
             Tests::NCommon::TLoggerInit(kikimr).Initialize();
             TTypedLocalHelper helper("Utf8", kikimr);
@@ -87,7 +91,9 @@ Y_UNIT_TEST_SUITE(KqpOlapStatistics) {
     Y_UNIT_TEST(StatsUsageWithTTL) {
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NYDBTest::NColumnShard::TController>();
         {
-            auto settings = TKikimrSettings().SetWithSampleTables(false);
+            NKikimrConfig::TAppConfig appConfig;
+            appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+            auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
             TKikimrRunner kikimr(settings);
             Tests::NCommon::TLoggerInit(kikimr).Initialize();
             TTypedLocalHelper helper("Utf8", kikimr);
diff --git a/ydb/core/kqp/ut/olap/sys_view_ut.cpp b/ydb/core/kqp/ut/olap/sys_view_ut.cpp
index 9d12b54efab6..5b46c91afa7b 100644
--- a/ydb/core/kqp/ut/olap/sys_view_ut.cpp
+++ b/ydb/core/kqp/ut/olap/sys_view_ut.cpp
@@ -116,7 +116,10 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
         {
             auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
             csController->SetOverrideBlobSplitSettings(NOlap::NSplitter::TSplitSettings());
+            NKikimrConfig::TAppConfig appConfig;
+            appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
             auto settings = TKikimrSettings()
+                .SetAppConfig(appConfig)
                 .SetWithSampleTables(false);
             TKikimrRunner kikimr(settings);
             Tests::NCommon::TLoggerInit(kikimr).Initialize();
@@ -136,7 +139,10 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
         const ui32 rowsCount = 800000;
         const ui32 groupsCount = 512;
         {
+            NKikimrConfig::TAppConfig appConfig;
+            appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
             auto settings = TKikimrSettings()
+                .SetAppConfig(appConfig)
                 .SetWithSampleTables(false);
             TKikimrRunner kikimr(settings);
             Tests::NCommon::TLoggerInit(kikimr).Initialize();
@@ -191,7 +197,10 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
         ui64 rawBytesPK1;
         ui64 bytesPK1;
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
+         NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
         auto settings = TKikimrSettings()
+            .SetAppConfig(appConfig)
             .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         Tests::NCommon::TLoggerInit(kikimr).Initialize();
@@ -228,7 +237,9 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
         ui64 rawBytes1;
         ui64 bytes1;
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         Tests::NCommon::TLoggerInit(kikimr).Initialize();
         TTypedLocalHelper helper("Utf8", kikimr);
@@ -259,7 +270,10 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
         ui64 rawBytes1;
         ui64 bytes1;
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
         auto settings = TKikimrSettings()
+            .SetAppConfig(appConfig)
             .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         Tests::NCommon::TLoggerInit(kikimr).Initialize();
@@ -298,7 +312,11 @@ Y_UNIT_TEST_SUITE(KqpOlapSysView) {
         ui64 bytes1;
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
         csController->SetSmallSizeDetector(Max<ui32>());
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings()
+            .SetAppConfig(appConfig)
+            .SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         Tests::NCommon::TLoggerInit(kikimr).Initialize();
         TTypedLocalHelper helper("Utf8", kikimr);
diff --git a/ydb/core/kqp/ut/olap/tiering_ut.cpp b/ydb/core/kqp/ut/olap/tiering_ut.cpp
index 847091530c4b..dd8727e58890 100644
--- a/ydb/core/kqp/ut/olap/tiering_ut.cpp
+++ b/ydb/core/kqp/ut/olap/tiering_ut.cpp
@@ -25,9 +25,10 @@ class TTestEvictionBase {
         auto csController = NYDBTest::TControllers::RegisterCSControllerGuard<NOlap::TWaitCompactionController>();
         csController->SetSkipSpecialCheckForEvict(true);
 
-        TKikimrSettings runnerSettings;
-        runnerSettings.WithSampleTables = false;
-        TestHelper.emplace(runnerSettings);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
+        TestHelper.emplace(settings);
         TLocalHelper localHelper(TestHelper->GetKikimr());
         // TestHelper->GetRuntime().SetLogPriority(NKikimrServices::FLAT_TX_SCHEMESHARD, NActors::NLog::PRI_DEBUG);
         // TestHelper->GetRuntime().SetLogPriority(NKikimrServices::TX_COLUMNSHARD, NActors::NLog::PRI_DEBUG);
diff --git a/ydb/core/kqp/ut/olap/write_ut.cpp b/ydb/core/kqp/ut/olap/write_ut.cpp
index 56b54a0dc6eb..fb5dd5345fd6 100644
--- a/ydb/core/kqp/ut/olap/write_ut.cpp
+++ b/ydb/core/kqp/ut/olap/write_ut.cpp
@@ -172,7 +172,9 @@ Y_UNIT_TEST_SUITE(KqpOlapWrite) {
     }
 
     Y_UNIT_TEST(DefaultValues) {
-        auto settings = TKikimrSettings().SetWithSampleTables(false);
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+        auto settings = TKikimrSettings().SetAppConfig(appConfig).SetWithSampleTables(false);
         TKikimrRunner kikimr(settings);
         Tests::NCommon::TLoggerInit(kikimr).Initialize();
         TTypedLocalHelper helper("Utf8", kikimr);
diff --git a/ydb/core/kqp/ut/scheme/kqp_scheme_ut.cpp b/ydb/core/kqp/ut/scheme/kqp_scheme_ut.cpp
index f9cd4148955a..f6f9f1854abc 100644
--- a/ydb/core/kqp/ut/scheme/kqp_scheme_ut.cpp
+++ b/ydb/core/kqp/ut/scheme/kqp_scheme_ut.cpp
@@ -8503,6 +8503,9 @@ Y_UNIT_TEST_SUITE(KqpOlapScheme) {
     }
 
     Y_UNIT_TEST(AddColumnWithTtl) {
+        NKikimrConfig::TAppConfig appConfig;
+        appConfig.MutableColumnShardConfig()->SetAlterObjectEnabled(true);
+
         TKikimrSettings runnerSettings;
         runnerSettings.WithSampleTables = false;
         TTestHelper testHelper(runnerSettings);
diff --git a/ydb/core/protos/config.proto b/ydb/core/protos/config.proto
index db3813447cd8..ca41bcc51a16 100644
--- a/ydb/core/protos/config.proto
+++ b/ydb/core/protos/config.proto
@@ -1792,6 +1792,7 @@ message TColumnShardConfig {
     optional uint64 WritingBufferVolumeMb = 33 [default = 32];
     optional uint64 WritingInFlightRequestsCountLimit = 34 [default = 1000];
     optional uint64 WritingInFlightRequestBytesLimit = 35 [default = 128000000];
+    optional bool AlterObjectEnabled = 36 [default = false];
 }
 
 message TSchemeShardConfig {