diff --git a/cpp/libs/ossrf_nmos_api/lib/include/ossrf/nmos/api/nmos.h b/cpp/libs/ossrf_nmos_api/lib/include/ossrf/nmos/api/nmos.h
index 05dbaaa..3cf7637 100644
--- a/cpp/libs/ossrf_nmos_api/lib/include/ossrf/nmos/api/nmos.h
+++ b/cpp/libs/ossrf_nmos_api/lib/include/ossrf/nmos/api/nmos.h
@@ -25,6 +25,10 @@ namespace ossrf
 
         [[nodiscard]] virtual bisect::maybe_ok modify_device(const bisect::nmoscpp::nmos_device_t& device) = 0;
 
+        [[nodiscard]] virtual bisect::maybe_ok modify_device_sub_resources(const std::string& device_id,
+                                                                         const std::vector<std::string>& receivers,
+                                                                         const std::vector<std::string>& senders) = 0;
+
         [[nodiscard]] virtual bisect::maybe_ok modify_receiver(const std::string& device_id,
                                                                const bisect::nmoscpp::nmos_receiver_t& config) = 0;
 
diff --git a/cpp/libs/ossrf_nmos_api/lib/include/ossrf/nmos/api/nmos_impl.h b/cpp/libs/ossrf_nmos_api/lib/include/ossrf/nmos/api/nmos_impl.h
index 7977956..ae5c55a 100644
--- a/cpp/libs/ossrf_nmos_api/lib/include/ossrf/nmos/api/nmos_impl.h
+++ b/cpp/libs/ossrf_nmos_api/lib/include/ossrf/nmos/api/nmos_impl.h
@@ -26,6 +26,10 @@ namespace ossrf
 
         [[nodiscard]] bisect::maybe_ok modify_device(const bisect::nmoscpp::nmos_device_t& config) noexcept override;
 
+        [[nodiscard]] bisect::maybe_ok
+        modify_device_sub_resources(const std::string& device_id, const std::vector<std::string>& receivers,
+                                    const std::vector<std::string>& senders) noexcept override;
+
         [[nodiscard]] bisect::maybe_ok
         modify_receiver(const std::string& device_id, const bisect::nmoscpp::nmos_receiver_t& config) noexcept override;
 
diff --git a/cpp/libs/ossrf_nmos_api/lib/src/context/resource_map.cpp b/cpp/libs/ossrf_nmos_api/lib/src/context/resource_map.cpp
index 193d577..4fe8e12 100644
--- a/cpp/libs/ossrf_nmos_api/lib/src/context/resource_map.cpp
+++ b/cpp/libs/ossrf_nmos_api/lib/src/context/resource_map.cpp
@@ -54,3 +54,39 @@ expected<nmos_resource_ptr> resource_map_t::find_resource(const std::string& res
     BST_FAIL("didn't find any resource with ID {}", resource_id);
     return {};
 }
+
+std::vector<std::string> resource_map_t::get_sender_ids() const
+{
+    std::vector<std::string> ids;
+    lock_t lock(mutex_);
+    for(const auto& [id, resources] : map_)
+    {
+        for(const auto& resource : resources)
+        {
+            if(resource->get_resource_type() == nmos::types::sender)
+            {
+                ids.push_back(id);
+            }
+        }
+    }
+
+    return ids;
+}
+
+std::vector<std::string> resource_map_t::get_receiver_ids() const
+{
+    std::vector<std::string> ids;
+    lock_t lock(mutex_);
+    for(const auto& [id, resources] : map_)
+    {
+        for(const auto& resource : resources)
+        {
+            if(resource->get_resource_type() == nmos::types::receiver)
+            {
+                ids.push_back(id);
+            }
+        }
+    }
+
+    return ids;
+}
\ No newline at end of file
diff --git a/cpp/libs/ossrf_nmos_api/lib/src/context/resource_map.h b/cpp/libs/ossrf_nmos_api/lib/src/context/resource_map.h
index a1edc4a..fa25b44 100644
--- a/cpp/libs/ossrf_nmos_api/lib/src/context/resource_map.h
+++ b/cpp/libs/ossrf_nmos_api/lib/src/context/resource_map.h
@@ -10,7 +10,7 @@ namespace ossrf
 {
     class resource_map_t
     {
-        std::mutex mutex_;
+        mutable std::mutex mutex_;
         std::unordered_map<std::string, std::vector<nmos_resource_ptr>> map_;
         using lock_t = std::unique_lock<std::mutex>;
 
@@ -20,6 +20,9 @@ namespace ossrf
         void erase(std::string);
 
         bisect::expected<nmos_resource_ptr> find_resource(const std::string& resource_id);
+        std::vector<std::string> get_sender_ids() const;
+        std::vector<std::string> get_receiver_ids() const;
+
     };
 
     using resource_map_ptr  = std::shared_ptr<resource_map_t>;
diff --git a/cpp/libs/ossrf_nmos_api/lib/src/nmos_client.cpp b/cpp/libs/ossrf_nmos_api/lib/src/nmos_client.cpp
index 4e13d2a..105eaba 100644
--- a/cpp/libs/ossrf_nmos_api/lib/src/nmos_client.cpp
+++ b/cpp/libs/ossrf_nmos_api/lib/src/nmos_client.cpp
@@ -14,6 +14,17 @@ using namespace bisect;
 using namespace ossrf;
 using json = nlohmann::json;
 
+namespace
+{
+    maybe_ok update_device_sub_resources(nmos_context_ptr context, const std::string& device_id)
+    {
+        const auto senders_ids  = context->resources().get_sender_ids();
+        const auto receiver_ids = context->resources().get_receiver_ids();
+        BST_CHECK(context->nmos().modify_device_sub_resources(utility::s2us(device_id), receiver_ids, senders_ids));
+        return {};
+    }
+} // namespace
+
 struct nmos_client_t::impl
 {
     std::string node_id_;
@@ -34,7 +45,7 @@ expected<nmos_client_uptr> nmos_client_t::create(const std::string& node_id,
     return nmos_client_uptr(new nmos_client_t{std::move(i)});
 }
 
-nmos_client_t::nmos_client_t(std::unique_ptr<impl>&& i) noexcept : impl_(std::move(i)){};
+nmos_client_t::nmos_client_t(std::unique_ptr<impl>&& i) noexcept : impl_(std::move(i)) {};
 
 nmos_client_t::~nmos_client_t()
 {
@@ -61,6 +72,7 @@ maybe_ok nmos_client_t::add_receiver(const std::string& device_id, const std::st
 
     auto r = std::make_shared<nmos_resource_receiver_t>(device_id, receiver_config, callback);
     impl_->context_->resources().insert(receiver_config.id, std::move(r));
+    BST_CHECK(update_device_sub_resources(impl_->context_, device_id));
 
     return {};
 }
@@ -76,6 +88,7 @@ maybe_ok nmos_client_t::add_sender(const std::string& device_id, const std::stri
 
     auto r = std::make_shared<nmos_resource_sender_t>(device_id, sender_config, callback);
     impl_->context_->resources().insert(sender_config.id, std::move(r));
+    BST_CHECK(update_device_sub_resources(impl_->context_, device_id));
 
     return {};
 }
diff --git a/cpp/libs/ossrf_nmos_api/lib/src/nmos_impl.cpp b/cpp/libs/ossrf_nmos_api/lib/src/nmos_impl.cpp
index b603f25..5ee888e 100644
--- a/cpp/libs/ossrf_nmos_api/lib/src/nmos_impl.cpp
+++ b/cpp/libs/ossrf_nmos_api/lib/src/nmos_impl.cpp
@@ -24,7 +24,7 @@ nmos_uptr nmos_impl::create(const std::string& node_id)
     return nmos_uptr(new nmos_impl{std::move(i)});
 }
 
-nmos_impl::nmos_impl(std::unique_ptr<impl>&& i) noexcept : impl_(std::move(i)){};
+nmos_impl::nmos_impl(std::unique_ptr<impl>&& i) noexcept : impl_(std::move(i)) {};
 
 nmos_impl::~nmos_impl()
 {
@@ -116,6 +116,15 @@ maybe_ok nmos_impl::modify_device(const nmos_device_t& config) noexcept
                                                [&](nmos::resource& resource) { resource = device_resource; });
 }
 
+maybe_ok nmos_impl::modify_device_sub_resources(const std::string& device_id, const std::vector<std::string>& receivers,
+                                                const std::vector<std::string>& senders) noexcept
+{
+    return impl_->controller_->modify_resource(device_id, [&](nmos::resource& resource) {
+        resource.data[nmos::fields::receivers] = web::json::value_from_elements(receivers);
+        resource.data[nmos::fields::senders]   = web::json::value_from_elements(senders);
+    });
+}
+
 maybe_ok nmos_impl::modify_receiver(const std::string& device_id, const nmos_receiver_t& config) noexcept
 {
     auto receiver = impl_->controller_->make_receiver(utility::s2us(device_id), config);
diff --git a/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource.h b/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource.h
index 213bd91..40be9ba 100644
--- a/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource.h
+++ b/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource.h
@@ -5,6 +5,7 @@
 #include <nmos/id.h>
 #include <string>
 #include <memory>
+#include <nmos/type.h>
 
 namespace ossrf
 {
@@ -21,6 +22,8 @@ namespace ossrf
         [[nodiscard]] virtual const std::string& get_id() const = 0;
 
         [[nodiscard]] virtual const std::string& get_device_id() const = 0;
+
+        [[nodiscard]] virtual nmos::type get_resource_type() const = 0;
     };
 
     using nmos_resource_ptr  = std::shared_ptr<nmos_resource_t>;
diff --git a/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_receiver.cpp b/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_receiver.cpp
index 6554bf1..c59e180 100644
--- a/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_receiver.cpp
+++ b/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_receiver.cpp
@@ -104,3 +104,8 @@ maybe_ok nmos_resource_receiver_t::handle_activation(bool master_enable, json& t
 
     return {};
 }
+
+nmos::type nmos_resource_receiver_t::get_resource_type() const
+{
+    return nmos::types::receiver;
+}
diff --git a/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_receiver.h b/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_receiver.h
index dfbed06..4ae145d 100644
--- a/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_receiver.h
+++ b/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_receiver.h
@@ -20,6 +20,8 @@ namespace ossrf
 
         const std::string& get_device_id() const override;
 
+        nmos::type get_resource_type() const override;
+
       private:
         const bisect::nmoscpp::nmos_receiver_t config_;
         bisect::nmoscpp::receiver_activation_callback_t activation_callback_;
diff --git a/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_sender.cpp b/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_sender.cpp
index e8e39fe..f387274 100644
--- a/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_sender.cpp
+++ b/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_sender.cpp
@@ -39,3 +39,8 @@ maybe_ok nmos_resource_sender_t::handle_patch(bool master_enable, const json& co
 {
     return {};
 }
+
+nmos::type nmos_resource_sender_t::get_resource_type() const
+{
+    return nmos::types::sender;
+}
diff --git a/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_sender.h b/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_sender.h
index d12e90e..8379e6d 100644
--- a/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_sender.h
+++ b/cpp/libs/ossrf_nmos_api/lib/src/resources/nmos_resource_sender.h
@@ -20,6 +20,8 @@ namespace ossrf
 
         const std::string& get_device_id() const override;
 
+        nmos::type get_resource_type() const override;
+
       private:
         const bisect::nmoscpp::nmos_sender_t config_;
         bisect::nmoscpp::sender_activation_callback_t activation_callback_;