diff --git a/radio/1.6/IRadioResponse.hal b/radio/1.6/IRadioResponse.hal
index 56ce809dfe..d65c6d0fe4 100644
--- a/radio/1.6/IRadioResponse.hal
+++ b/radio/1.6/IRadioResponse.hal
@@ -230,6 +230,7 @@ interface IRadioResponse extends @1.5::IRadioResponse {
      *   RadioError:NONE
      *   RadioError:RADIO_NOT_AVAILABLE
      *   RadioError:INTERNAL_ERR
+     *   RadioError:REQUEST_NOT_SUPPORTED
      */
     oneway setNrDualConnectivityStateResponse(RadioResponseInfo info);
 
@@ -242,6 +243,7 @@ interface IRadioResponse extends @1.5::IRadioResponse {
      *   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 e82c01a049..91d98cbce1 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 @@ TEST_P(RadioHidlTest_v1_6, setNrDualConnectivityState) {
     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 @@ TEST_P(RadioHidlTest_v1_6, isNrDualConnectivityEnabled) {
     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}));
+    }
 }
 
 /*
diff --git a/radio/config/1.3/types.hal b/radio/config/1.3/types.hal
index 8915970d67..117abf3211 100644
--- a/radio/config/1.3/types.hal
+++ b/radio/config/1.3/types.hal
@@ -28,6 +28,9 @@ struct HalDeviceCapabilities {
    * or android.hardware.radio@1.6::LinkCapacityEstimate:secondaryUplinkCapacityKbps
    * when given from android.hardware.radio@1.6::RadioIndication:currentLinkCapacityEstimate
    * </li>
+   * <li> calling android.hardware.radio@1.6::IRadio.setNrDualConnectivityState
+   * or querying android.hardware.radio@1.6::IRadio.isNrDualConnectivityEnabled
+   * </li>
    * </ul>
    */
   bool modemReducedFeatureSet1;