diff --git a/src/include/platform/internal/GenericConnectivityManagerImpl_NoThread.h b/src/include/platform/internal/GenericConnectivityManagerImpl_NoThread.h
index 6e7f51c92874cc..61b157e25d5563 100644
--- a/src/include/platform/internal/GenericConnectivityManagerImpl_NoThread.h
+++ b/src/include/platform/internal/GenericConnectivityManagerImpl_NoThread.h
@@ -143,169 +143,7 @@ template <class ImplClass>
 inline CHIP_ERROR GenericConnectivityManagerImpl_NoThread<ImplClass>::_WriteThreadNetworkDiagnosticAttributeToTlv(
     AttributeId attributeId, app::AttributeValueEncoder & encoder)
 {
-    CHIP_ERROR err = CHIP_NO_ERROR;
-
-    switch (attributeId)
-    {
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::NeighborTableList::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RouteTableList::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::ActiveNetworkFaultsList::Id:
-        err = encoder.EncodeEmptyList();
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::Channel::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RoutingRole::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::NetworkName::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::PanId::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::ExtendedPanId::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::MeshLocalPrefix::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::PartitionId::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::Weighting::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::DataVersion::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::StableDataVersion::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::LeaderRouterId::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::ActiveTimestamp::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::PendingTimestamp::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::Delay::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::ChannelMask::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::SecurityPolicy::Id:
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::OperationalDatasetComponents::Id:
-        err = encoder.EncodeNull();
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::OverrunCount::Id:
-        err = encoder.Encode(static_cast<uint64_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::DetachedRoleCount::Id:
-        err = encoder.Encode(static_cast<uint16_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::ChildRoleCount::Id:
-        err = encoder.Encode(static_cast<uint16_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RouterRoleCount::Id:
-        err = encoder.Encode(static_cast<uint16_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::LeaderRoleCount::Id:
-        err = encoder.Encode(static_cast<uint16_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::AttachAttemptCount::Id:
-        err = encoder.Encode(static_cast<uint16_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::PartitionIdChangeCount::Id:
-        err = encoder.Encode(static_cast<uint16_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::BetterPartitionAttachAttemptCount::Id:
-        err = encoder.Encode(static_cast<uint16_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::ParentChangeCount::Id:
-        err = encoder.Encode(static_cast<uint16_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxTotalCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxUnicastCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxBroadcastCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxAckRequestedCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxAckedCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxNoAckRequestedCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxDataCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxDataPollCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxBeaconCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxBeaconRequestCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxOtherCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxRetryCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxDirectMaxRetryExpiryCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxIndirectMaxRetryExpiryCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxErrCcaCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxErrAbortCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::TxErrBusyChannelCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxTotalCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxUnicastCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxBroadcastCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxDataCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxDataPollCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxBeaconCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxBeaconRequestCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxOtherCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxAddressFilteredCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxDestAddrFilteredCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxDuplicatedCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxErrNoFrameCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxErrUnknownNeighborCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxErrInvalidSrcAddrCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxErrSecCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxErrFcsCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    case app::Clusters::ThreadNetworkDiagnostics::Attributes::RxErrOtherCount::Id:
-        err = encoder.Encode(static_cast<uint32_t>(0));
-        break;
-    default:
-        err = CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE;
-        break;
-    }
-
-    return err;
+    return CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE;
 }
 
 } // namespace Internal