diff --git a/radio/1.6/IRadioResponse.hal b/radio/1.6/IRadioResponse.hal
index 56ce809..d65c6d0 100644
--- a/radio/1.6/IRadioResponse.hal
+++ b/radio/1.6/IRadioResponse.hal
@@ -230,6 +230,7 @@
      *   RadioError:NONE
      *   RadioError:RADIO_NOT_AVAILABLE
      *   RadioError:INTERNAL_ERR
+     *   RadioError:REQUEST_NOT_SUPPORTED
      */
     oneway setNrDualConnectivityStateResponse(RadioResponseInfo info);
 
@@ -242,6 +243,7 @@
      *   RadioError:NONE
      *   RadioError:RADIO_NOT_AVAILABLE
      *   RadioError:INTERNAL_ERR
+     *   RadioError:REQUEST_NOT_SUPPORTED
      */
     oneway isNrDualConnectivityEnabledResponse(RadioResponseInfo info, bool isEnabled);
 
diff --git a/radio/1.6/vts/functional/radio_hidl_hal_api.cpp b/radio/1.6/vts/functional/radio_hidl_hal_api.cpp
index e82c01a..91d98cb 100644
--- a/radio/1.6/vts/functional/radio_hidl_hal_api.cpp
+++ b/radio/1.6/vts/functional/radio_hidl_hal_api.cpp
@@ -369,10 +369,17 @@
     EXPECT_EQ(std::cv_status::no_timeout, wait());
     EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_v1_6->rspInfo.type);
     EXPECT_EQ(serial, radioRsp_v1_6->rspInfo.serial);
-    ASSERT_TRUE(CheckAnyOfErrors(radioRsp_v1_6->rspInfo.error,
+    if (getRadioHalCapabilities().modemReducedFeatureSet1) {
+        ASSERT_TRUE(CheckAnyOfErrors(
+                radioRsp_v1_6->rspInfo.error,
+                {::android::hardware::radio::V1_6::RadioError::REQUEST_NOT_SUPPORTED}));
+    } else {
+        ASSERT_TRUE(
+                CheckAnyOfErrors(radioRsp_v1_6->rspInfo.error,
                                  {::android::hardware::radio::V1_6::RadioError::RADIO_NOT_AVAILABLE,
                                   ::android::hardware::radio::V1_6::RadioError::INTERNAL_ERR,
                                   ::android::hardware::radio::V1_6::RadioError::NONE}));
+    }
 }
 
 /*
@@ -387,10 +394,17 @@
     EXPECT_EQ(std::cv_status::no_timeout, wait());
     EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_v1_6->rspInfo.type);
     EXPECT_EQ(serial, radioRsp_v1_6->rspInfo.serial);
-    ASSERT_TRUE(CheckAnyOfErrors(radioRsp_v1_6->rspInfo.error,
+    if (getRadioHalCapabilities().modemReducedFeatureSet1) {
+        ASSERT_TRUE(CheckAnyOfErrors(
+                radioRsp_v1_6->rspInfo.error,
+                {::android::hardware::radio::V1_6::RadioError::REQUEST_NOT_SUPPORTED}));
+    } else {
+        ASSERT_TRUE(
+                CheckAnyOfErrors(radioRsp_v1_6->rspInfo.error,
                                  {::android::hardware::radio::V1_6::RadioError::RADIO_NOT_AVAILABLE,
                                   ::android::hardware::radio::V1_6::RadioError::INTERNAL_ERR,
                                   ::android::hardware::radio::V1_6::RadioError::NONE}));
+    }
 }
 
 /*