diff --git a/CHANGELOG.md b/CHANGELOG.md
index d87d0315..b0b487ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Check reason to skip notification in Slack to avoid task perform_notification retries @Ferril ([#3562](https://github.com/grafana/oncall/pull/3562))
+- Fix alert group table columns validation @Ferril ([#3577](https://github.com/grafana/oncall/pull/3577))
 
 ## v1.3.80 (2023-12-14)
 
diff --git a/engine/apps/api/serializers/alert_group_table_settings.py b/engine/apps/api/serializers/alert_group_table_settings.py
index 24dccf1a..0b24c791 100644
--- a/engine/apps/api/serializers/alert_group_table_settings.py
+++ b/engine/apps/api/serializers/alert_group_table_settings.py
@@ -34,14 +34,19 @@ class AlertGroupTableColumnsOrganizationSerializer(serializers.Serializer):
         """
         Validate that at least one column is selected as visible and that all default columns are in the list.
         """
-        columns = data["visible"] + data["hidden"]
-        request_columns_ids = [column["id"] for column in columns]
+        request_columns_by_type = {}
+        for column in data["visible"] + data["hidden"]:
+            request_columns_by_type.setdefault(column["type"], []).append(column["id"])
         if len(data["visible"]) == 0:
             raise ValidationError("At least one column should be selected as visible")
-        elif not set(request_columns_ids) >= set(AlertGroupTableDefaultColumnChoices.values):
+        elif not (
+            set(request_columns_by_type[AlertGroupTableColumnTypeChoices.DEFAULT])
+            == set(AlertGroupTableDefaultColumnChoices.values)
+        ):
             raise ValidationError("Default column cannot be removed")
-        elif len(request_columns_ids) > len(set(request_columns_ids)):
-            raise ValidationError("Duplicate column")
+        for columns_ids in request_columns_by_type.values():
+            if len(columns_ids) > len(set(columns_ids)):
+                raise ValidationError("Duplicate column")
         return data
 
 
diff --git a/engine/apps/api/tests/test_alert_group_table_settings.py b/engine/apps/api/tests/test_alert_group_table_settings.py
index 175f3308..edbab9e9 100644
--- a/engine/apps/api/tests/test_alert_group_table_settings.py
+++ b/engine/apps/api/tests/test_alert_group_table_settings.py
@@ -5,7 +5,11 @@ from rest_framework.test import APIClient
 
 from apps.api.alert_group_table_columns import alert_group_table_user_settings
 from apps.api.permissions import LegacyAccessControlRole
-from apps.user_management.constants import AlertGroupTableColumnTypeChoices, default_columns
+from apps.user_management.constants import (
+    AlertGroupTableColumnTypeChoices,
+    AlertGroupTableDefaultColumnChoices,
+    default_columns,
+)
 
 DEFAULT_COLUMNS = default_columns()
 
@@ -41,6 +45,18 @@ def test_get_columns(
             columns_settings({"name": "Test", "id": "test", "type": AlertGroupTableColumnTypeChoices.LABEL.value}),
             status.HTTP_200_OK,
         ),
+        # add label column with the same id as default
+        (
+            columns_settings(),
+            columns_settings({"name": "Status", "id": "status", "type": AlertGroupTableColumnTypeChoices.LABEL.value}),
+            status.HTTP_200_OK,
+        ),
+        # add unexisting default column
+        (
+            columns_settings(),
+            columns_settings({"name": "Hello", "id": "hello", "type": AlertGroupTableColumnTypeChoices.DEFAULT.value}),
+            status.HTTP_400_BAD_REQUEST,
+        ),
         # remove column
         (
             columns_settings({"name": "Test", "id": "test", "type": AlertGroupTableColumnTypeChoices.LABEL.value}),
@@ -60,7 +76,13 @@ def test_get_columns(
         # duplicate id
         (
             columns_settings(),
-            columns_settings({"name": "Test", "id": 1, "type": AlertGroupTableColumnTypeChoices.DEFAULT.value}),
+            columns_settings(
+                {
+                    "name": "Test",
+                    "id": AlertGroupTableDefaultColumnChoices.STATUS.value,
+                    "type": AlertGroupTableColumnTypeChoices.DEFAULT.value,
+                }
+            ),
             status.HTTP_400_BAD_REQUEST,
         ),
         # remove default column