diff --git a/src/python_testing/TC_DD_3_23.py b/src/python_testing/TC_DD_3_23.py
index 7d81679d3f3c08..b6db633816612a 100644
--- a/src/python_testing/TC_DD_3_23.py
+++ b/src/python_testing/TC_DD_3_23.py
@@ -36,7 +36,10 @@ def desc_TC_DD_3_23(self) -> str:
     def steps_TC_DD_3_23(self) -> list[TestStep]:
         return [
             TestStep(1, "Detecting the NFC Tag and reading the Payload", is_commissioning=False),
-            TestStep(2, 'Validate the NFC bit in payload and Perform the commissioning')
+            TestStep(2, "Validate the NFC bit in payload and Perform the commissioning"),
+            TestStep(3, "Perform the commissioning again to check if the device is already commissioned and commissioning fails"),
+            TestStep(4, "DUT is powered OFF."),
+            TestStep(5, "Perform the commissioning again to check if the device is already commissioned and commissioning fails"),
         ]
 
     def setup_test(self):
@@ -110,6 +113,25 @@ async def test_TC_DD_3_23(self):
         asserts.assert_false(self.unpowered_phase_complete_seen, "Stage 'UnpoweredPhaseComplete' was seen which is not expected!")
         asserts.assert_true(self.send_complete_seen, "Stage 'send_complete_seen' was not seen!")
 
+        # Step 3: Perform the commissioning again to check if the device is already commissioned and commissioning fails
+        self.step(3)
+        commissioning_success = await self.commission_devices()
+        asserts.assert_false(
+            commissioning_success,
+            "Device Commissioning using nfc transport has succeeded when it should have failed"
+        )
+
+        self.step(4)
+        self.wait_for_user_input(prompt_msg="Power OFF the device")
+
+        # Step 5: Perform the commissioning again to check if the device is already commissioned and commissioning fails
+        self.step(5)
+        commissioning_success = await self.commission_devices()
+        asserts.assert_false(
+            commissioning_success,
+            "Device Commissioning using nfc transport has succeeded when it should have failed"
+        )
+
 
 if __name__ == "__main__":
     default_matter_test_main()