diff --git a/CHANGELOG.md b/CHANGELOG.md
index 59a9247306f7..30258724f82a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,32 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ### Deprecations
 
+### 🛡 Security
+
+### 📈 Features/Enhancements
+
+### 🐛 Bug Fixes
+
+- [BUG][Discover] Allow saved sort from search embeddable to load in Dashboard ([#5934](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5934))
+- [BUG][Discover] Add key to index pattern options for support deplicate index pattern names([#5946](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5946))
+- [Discover] Fix table cell content overflowing in Safari ([#5948](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5948))
+
+### 🚞 Infrastructure
+
+### 📝 Documentation
+
+### 🛠 Maintenance
+
+### 🪛 Refactoring
+
+### 🔩 Tests
+
+## [2.12.0 - 2024-02-20](https://github.com/opensearch-project/OpenSearch-Dashboards/releases/tag/2.12.0)
+
+### 💥 Breaking Changes
+
+### Deprecations
+
 - Rename `withLongNumerals` to `withLongNumeralsSupport` in `HttpFetchOptions` [#5592](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5592)
 
 ### 🛡 Security
@@ -70,8 +96,6 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - [BUG] Remove duplicate sample data as id 90943e30-9a47-11e8-b64d-95841ca0b247 ([5668](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5668))
 - [BUG][Multiple Datasource] Fix datasource testing connection unexpectedly passed with wrong endpoint [#5663](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5663)
 - [Table Visualization] Fix filter action buttons for split table aggregations ([#5619](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5619))
-- [BUG][Discover] Allow saved sort from search embeddable to load in Dashboard ([#5934](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5934))
-- [Discover] Fix table cell content overflowing in Safari ([#5948](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/5948))
 
 ### 🚞 Infrastructure
 
diff --git a/src/plugins/data/public/data_sources/datasource_selector/datasource_selectable.test.tsx b/src/plugins/data/public/data_sources/datasource_selector/datasource_selectable.test.tsx
index 3e6c99e420d6..63c2437cc7b3 100644
--- a/src/plugins/data/public/data_sources/datasource_selector/datasource_selectable.test.tsx
+++ b/src/plugins/data/public/data_sources/datasource_selector/datasource_selectable.test.tsx
@@ -181,4 +181,47 @@ describe('DataSourceSelectable', () => {
     ];
     expect(optionTexts).toEqual(expectedIndexPatternSortedOrder);
   });
+
+  it('should allow display and selection of duplicated index patterns based on unique key', async () => {
+    const mockDataSourceOptionListWithDuplicates = [
+      {
+        label: 'Index patterns',
+        options: [
+          { label: 'duplicate-index-pattern', key: 'unique-key-1' },
+          { label: 'unique-index-pattern-1', key: 'unique-key-2' },
+          { label: 'duplicate-index-pattern', key: 'unique-key-3' },
+          { label: 'unique-index-pattern-2', key: 'unique-key-4' },
+        ],
+      },
+    ] as any;
+
+    const handleSelect = jest.fn();
+
+    render(
+      <DataSourceSelectable
+        dataSources={[
+          ({
+            getDataSet: jest.fn().mockResolvedValue([]),
+            getType: jest.fn().mockReturnValue('DEFAULT_INDEX_PATTERNS'),
+            getName: jest.fn().mockReturnValue('Index patterns'),
+          } as unknown) as DataSourceType,
+        ]}
+        dataSourceOptionList={mockDataSourceOptionListWithDuplicates}
+        selectedSources={selectedSourcesMock}
+        onDataSourceSelect={handleSelect}
+        setDataSourceOptionList={setDataSourceOptionListMock}
+        onGetDataSetError={onFetchDataSetErrorMock}
+      />
+    );
+
+    const button = screen.getByLabelText('Open list of options');
+    fireEvent.click(button);
+
+    const optionsToSelect = screen.getAllByText('duplicate-index-pattern');
+    fireEvent.click(optionsToSelect[1]);
+
+    expect(handleSelect).toHaveBeenCalledWith(
+      expect.objectContaining([{ key: 'unique-key-3', label: 'duplicate-index-pattern' }])
+    );
+  });
 });
diff --git a/src/plugins/data/public/data_sources/datasource_selector/datasource_selectable.tsx b/src/plugins/data/public/data_sources/datasource_selector/datasource_selectable.tsx
index 1c6876815a0e..88abe18aa143 100644
--- a/src/plugins/data/public/data_sources/datasource_selector/datasource_selectable.tsx
+++ b/src/plugins/data/public/data_sources/datasource_selector/datasource_selectable.tsx
@@ -52,6 +52,7 @@ export const getSourceOptions = (dataSource: DataSourceType, dataSet: DataSetTyp
       ...optionContent,
       label: dataSet.title,
       value: dataSet.id,
+      key: dataSet.id,
     };
   }
   return {