diff --git a/src/app/tests/suites/certification/Test_TC_SMCO_2_6.yaml b/src/app/tests/suites/certification/Test_TC_SMCO_2_6.yaml
index 5d68637c3b5a46..0b13078763c4cb 100644
--- a/src/app/tests/suites/certification/Test_TC_SMCO_2_6.yaml
+++ b/src/app/tests/suites/certification/Test_TC_SMCO_2_6.yaml
@@ -60,6 +60,18 @@ config:
     HIEST_PRI_ALARM:
         type: int8u
         defaultValue: 1
+    HIEST_PRI_ALARM_2:
+        type: int8u
+        defaultValue: 2
+    HIEST_PRI_ALARM_3:
+        type: int8u
+        defaultValue: 7
+    HIEST_PRI_ALARM_4:
+        type: int8u
+        defaultValue: 7
+    HIEST_PRI_ALARM_5:
+        type: int8u
+        defaultValue: 3
 
 tests:
     - label: "Commission DUT to TH"
@@ -334,7 +346,7 @@ tests:
       command: "readAttribute"
       attribute: "ExpressedState"
       response:
-          value: HIEST_PRI_ALARM
+          value: HIEST_PRI_ALARM_2
           constraints:
               type: enum8
 
@@ -371,7 +383,7 @@ tests:
       command: "readAttribute"
       attribute: "ExpressedState"
       response:
-          value: HIEST_PRI_ALARM
+          value: HIEST_PRI_ALARM_3
           constraints:
               type: enum8
 
@@ -409,7 +421,7 @@ tests:
       command: "readAttribute"
       attribute: "ExpressedState"
       response:
-          value: HIEST_PRI_ALARM
+          value: HIEST_PRI_ALARM_4
           constraints:
               type: enum8
 
@@ -447,7 +459,7 @@ tests:
       command: "readAttribute"
       attribute: "ExpressedState"
       response:
-          value: HIEST_PRI_ALARM
+          value: HIEST_PRI_ALARM_5
           constraints:
               type: enum8
 
diff --git a/zzz_generated/chip-tool/zap-generated/test/Commands.h b/zzz_generated/chip-tool/zap-generated/test/Commands.h
index ce0c3be66f3523..e800416ec18db5 100644
--- a/zzz_generated/chip-tool/zap-generated/test/Commands.h
+++ b/zzz_generated/chip-tool/zap-generated/test/Commands.h
@@ -63224,6 +63224,10 @@ class Test_TC_SMCO_2_6Suite : public TestCommand
         AddArgument("TEST_EVENT_TRIGGER_INTERCONNECT_CO_ALARM", 0, UINT64_MAX, &mTestEventTriggerInterconnectCoAlarm);
         AddArgument("TEST_EVENT_TRIGGER_INTERCONNECT_CO_ALARM_CLEAR", 0, UINT64_MAX, &mTestEventTriggerInterconnectCoAlarmClear);
         AddArgument("HIEST_PRI_ALARM", 0, UINT8_MAX, &mHiestPriAlarm);
+        AddArgument("HIEST_PRI_ALARM_2", 0, UINT8_MAX, &mHiestPriAlarm2);
+        AddArgument("HIEST_PRI_ALARM_3", 0, UINT8_MAX, &mHiestPriAlarm3);
+        AddArgument("HIEST_PRI_ALARM_4", 0, UINT8_MAX, &mHiestPriAlarm4);
+        AddArgument("HIEST_PRI_ALARM_5", 0, UINT8_MAX, &mHiestPriAlarm5);
     }
 
     ~Test_TC_SMCO_2_6Suite() {}
@@ -63247,6 +63251,10 @@ class Test_TC_SMCO_2_6Suite : public TestCommand
     chip::Optional<uint64_t> mTestEventTriggerInterconnectCoAlarm;
     chip::Optional<uint64_t> mTestEventTriggerInterconnectCoAlarmClear;
     chip::Optional<uint8_t> mHiestPriAlarm;
+    chip::Optional<uint8_t> mHiestPriAlarm2;
+    chip::Optional<uint8_t> mHiestPriAlarm3;
+    chip::Optional<uint8_t> mHiestPriAlarm4;
+    chip::Optional<uint8_t> mHiestPriAlarm5;
 
     chip::EndpointId GetEndpoint(chip::EndpointId endpoint) { return mEndpoint.HasValue() ? mEndpoint.Value() : endpoint; }
 
@@ -63420,7 +63428,7 @@ class Test_TC_SMCO_2_6Suite : public TestCommand
             {
                 chip::app::Clusters::SmokeCoAlarm::ExpressedStateEnum value;
                 VerifyOrReturn(CheckDecodeValue(chip::app::DataModel::Decode(*data, value)));
-                VerifyOrReturn(CheckValue("expressedState", value, mHiestPriAlarm.HasValue() ? mHiestPriAlarm.Value() : 1U));
+                VerifyOrReturn(CheckValue("expressedState", value, mHiestPriAlarm2.HasValue() ? mHiestPriAlarm2.Value() : 2U));
                 VerifyOrReturn(CheckConstraintType("value", "enum8", "enum8"));
             }
             break;
@@ -63442,7 +63450,7 @@ class Test_TC_SMCO_2_6Suite : public TestCommand
             {
                 chip::app::Clusters::SmokeCoAlarm::ExpressedStateEnum value;
                 VerifyOrReturn(CheckDecodeValue(chip::app::DataModel::Decode(*data, value)));
-                VerifyOrReturn(CheckValue("expressedState", value, mHiestPriAlarm.HasValue() ? mHiestPriAlarm.Value() : 1U));
+                VerifyOrReturn(CheckValue("expressedState", value, mHiestPriAlarm3.HasValue() ? mHiestPriAlarm3.Value() : 7U));
                 VerifyOrReturn(CheckConstraintType("value", "enum8", "enum8"));
             }
             break;
@@ -63464,7 +63472,7 @@ class Test_TC_SMCO_2_6Suite : public TestCommand
             {
                 chip::app::Clusters::SmokeCoAlarm::ExpressedStateEnum value;
                 VerifyOrReturn(CheckDecodeValue(chip::app::DataModel::Decode(*data, value)));
-                VerifyOrReturn(CheckValue("expressedState", value, mHiestPriAlarm.HasValue() ? mHiestPriAlarm.Value() : 1U));
+                VerifyOrReturn(CheckValue("expressedState", value, mHiestPriAlarm4.HasValue() ? mHiestPriAlarm4.Value() : 7U));
                 VerifyOrReturn(CheckConstraintType("value", "enum8", "enum8"));
             }
             break;
@@ -63486,7 +63494,7 @@ class Test_TC_SMCO_2_6Suite : public TestCommand
             {
                 chip::app::Clusters::SmokeCoAlarm::ExpressedStateEnum value;
                 VerifyOrReturn(CheckDecodeValue(chip::app::DataModel::Decode(*data, value)));
-                VerifyOrReturn(CheckValue("expressedState", value, mHiestPriAlarm.HasValue() ? mHiestPriAlarm.Value() : 1U));
+                VerifyOrReturn(CheckValue("expressedState", value, mHiestPriAlarm5.HasValue() ? mHiestPriAlarm5.Value() : 3U));
                 VerifyOrReturn(CheckConstraintType("value", "enum8", "enum8"));
             }
             break;