From f97a0025434679162acd8b646429d5331837b028 Mon Sep 17 00:00:00 2001
From: "nikolai.shipilov" <nikolai.shipilov@opendaq.com>
Date: Wed, 10 Jun 2026 11:21:02 +0200
Subject: [PATCH 1/2] Filter-out duplicating method-properties

- Skip property creation for default methods of input ports and servers
- Clear error info after detecting property duplicate
---
 .../opcuatms_client/objects/tms_client_property_object_impl.h | 3 +++
 .../src/objects/tms_client_property_object_impl.cpp           | 4 +++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/shared/libraries/opcuatms/opcuatms_client/include/opcuatms_client/objects/tms_client_property_object_impl.h b/shared/libraries/opcuatms/opcuatms_client/include/opcuatms_client/objects/tms_client_property_object_impl.h
index c8f081f..ac81ab4 100644
--- a/shared/libraries/opcuatms/opcuatms_client/include/opcuatms_client/objects/tms_client_property_object_impl.h
+++ b/shared/libraries/opcuatms/opcuatms_client/include/opcuatms_client/objects/tms_client_property_object_impl.h
@@ -82,6 +82,7 @@ class TmsClientPropertyObjectBaseImpl : public TmsClientObjectImpl, public Impl
         : TmsClientObjectImpl(ctx, clientContext, nodeId)
         , Impl(ctx, parent, localId)
         , propBrowseName(propBrowseName)
+        , defaultMethodsNames({"Connect", "Disconnect"})
     {
         init();
     }
@@ -126,6 +127,7 @@ class TmsClientPropertyObjectBaseImpl : public TmsClientObjectImpl, public Impl
         : TmsClientObjectImpl(ctx, clientContext, nodeId)
         , Impl(localId, nullptr, parentDevice, ctx, parent)
         , propBrowseName(propBrowseName)
+        , defaultMethodsNames({"EnableDiscovery", "DisableDiscovery"})
     {
         init();
     }
@@ -160,6 +162,7 @@ class TmsClientPropertyObjectBaseImpl : public TmsClientObjectImpl, public Impl
     std::map<std::string, std::string> propBrowseName;
     opcua::OpcUaNodeId methodParentNodeId;
     LoggerComponentPtr loggerComponent;
+    const std::unordered_set<std::string> defaultMethodsNames{};
     
     ErrCode setOPCUAPropertyValueInternal(IString* propertyName, IBaseObject* value, bool protectedWrite);
     void addProperties(const OpcUaNodeId& parentId,
diff --git a/shared/libraries/opcuatms/opcuatms_client/src/objects/tms_client_property_object_impl.cpp b/shared/libraries/opcuatms/opcuatms_client/src/objects/tms_client_property_object_impl.cpp
index b886f08..00c137e 100644
--- a/shared/libraries/opcuatms/opcuatms_client/src/objects/tms_client_property_object_impl.cpp
+++ b/shared/libraries/opcuatms/opcuatms_client/src/objects/tms_client_property_object_impl.cpp
@@ -642,6 +642,8 @@ void TmsClientPropertyObjectBaseImpl<Impl>::browseRawProperties()
         auto ec = Impl::addProperty(prop);
         if (ec != OPENDAQ_ERR_ALREADYEXISTS)
             return ec;
+        else
+            daqClearErrorInfo();
         LOG_W("OPC UA exposes two properties with the same name \"{}\". The duplicate property will be ignored.", prop.getName())
         return OPENDAQ_SUCCESS;
     };
@@ -674,7 +676,7 @@ void TmsClientPropertyObjectBaseImpl<Impl>::setLocksForAttributes()
 template <class Impl>
 bool TmsClientPropertyObjectBaseImpl<Impl>::isIgnoredMethodProperty(const std::string& browseName)
 {
-    return browseName == "BeginUpdate" || browseName == "EndUpdate" || browseName == "GetErrorInformation";
+    return browseName == "BeginUpdate" || browseName == "EndUpdate" || browseName == "GetErrorInformation" || defaultMethodsNames.count(browseName) != 0;
 }
 
 template <class Impl>

From 41c46d73bc8996e61a93310170cfc6b821821814 Mon Sep 17 00:00:00 2001
From: "nikolai.shipilov" <nikolai.shipilov@opendaq.com>
Date: Thu, 11 Jun 2026 09:02:42 +0200
Subject: [PATCH 2/2] Update changelog and bump version to 4.0.1

---
 changelog/changelog | 1 +
 module_version      | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/changelog/changelog b/changelog/changelog
index 1d8f725..0877303 100644
--- a/changelog/changelog
+++ b/changelog/changelog
@@ -5,6 +5,7 @@
 
 ## Bug fixes
 
+- [#32](https://github.com/openDAQ/OpcUaModules/pull/32) Filter-out duplicating method-properties.
 - [#9](https://github.com/openDAQ/OpcUaModules/pull/9) Fix appending dependent boost components.
 
 ## Documenation
diff --git a/module_version b/module_version
index 0c89fc9..cc868b6 100644
--- a/module_version
+++ b/module_version
@@ -1 +1 @@
-4.0.0
\ No newline at end of file
+4.0.1
\ No newline at end of file