diff --git a/six/modules/c++/six.sicd/include/six/sicd/Utilities.h b/six/modules/c++/six.sicd/include/six/sicd/Utilities.h
index cc3653ead..cac19c097 100644
--- a/six/modules/c++/six.sicd/include/six/sicd/Utilities.h
+++ b/six/modules/c++/six.sicd/include/six/sicd/Utilities.h
@@ -428,10 +428,14 @@ struct Utilities final
      *
      * \return XML string representation of 'data'
      */
-    static std::string toXMLString(
+    static std::u8string toXMLString(
             const ComplexData& data,
             const std::vector<std::string>& schemaPaths = std::vector<std::string>(),
             logging::Logger* logger = nullptr);
+    static std::string toXMLString_(
+        const ComplexData& data,
+        const std::vector<std::string>& schemaPaths = std::vector<std::string>(),
+        logging::Logger* logger = nullptr);
     static std::u8string toXMLString(const ComplexData&,
         const std::vector<std::filesystem::path>*, logging::Logger* pLogger = nullptr);
     /*!
diff --git a/six/modules/c++/six.sicd/source/Utilities.cpp b/six/modules/c++/six.sicd/source/Utilities.cpp
index 81f3f3fdf..99377c227 100644
--- a/six/modules/c++/six.sicd/source/Utilities.cpp
+++ b/six/modules/c++/six.sicd/source/Utilities.cpp
@@ -1040,7 +1040,7 @@ std::unique_ptr<ComplexData> Utilities::parseDataFromString(const std::u8string&
     return parser.fromXML(xmlStr);
 }
 
-std::string Utilities::toXMLString(const ComplexData& data,
+std::u8string Utilities::toXMLString(const ComplexData& data,
                                    const std::vector<std::string>& schemaPaths_,
                                    logging::Logger* logger)
 {
@@ -1048,7 +1048,13 @@ std::string Utilities::toXMLString(const ComplexData& data,
     std::transform(schemaPaths_.begin(), schemaPaths_.end(), std::back_inserter(schemaPaths),
         [](const std::string& s) { return s; });
 
-    const auto result = toXMLString(data, &schemaPaths, logger);
+    return toXMLString(data, &schemaPaths, logger);
+ }
+std::string Utilities::toXMLString_(const ComplexData& data,
+    const std::vector<std::string>& schemaPaths,
+    logging::Logger* logger)
+{
+    const auto result = toXMLString(data, schemaPaths, logger);
     return str::to_native(result);
 }
 std::u8string Utilities::toXMLString(const ComplexData& data,
diff --git a/six/modules/c++/six.sidd/include/six/sidd/Utilities.h b/six/modules/c++/six.sidd/include/six/sidd/Utilities.h
index 1bc5713bd..0074311f3 100644
--- a/six/modules/c++/six.sidd/include/six/sidd/Utilities.h
+++ b/six/modules/c++/six.sidd/include/six/sidd/Utilities.h
@@ -150,9 +150,12 @@ class Utilities
      * \return XML string representation of
      *'data'
      */
-    static std::string toXMLString(const DerivedData& data,
+    static std::u8string toXMLString(const DerivedData& data,
             const std::vector<std::string>& schemaPaths,
             logging::Logger* logger);
+    static std::string toXMLString_(const DerivedData& data,
+        const std::vector<std::string>& schemaPaths,
+        logging::Logger* logger);
     static std::u8string toXMLString(const DerivedData&,
         const std::vector<std::filesystem::path>*, logging::Logger* pLogger = nullptr);
 };
diff --git a/six/modules/c++/six.sidd/source/Utilities.cpp b/six/modules/c++/six.sidd/source/Utilities.cpp
index 89ffee2a5..8a2455db2 100644
--- a/six/modules/c++/six.sidd/source/Utilities.cpp
+++ b/six/modules/c++/six.sidd/source/Utilities.cpp
@@ -580,14 +580,20 @@ std::unique_ptr<DerivedData> Utilities::parseDataFromString(const std::u8string&
     return dataParser.fromXML(xmlStr);
 }
 
-std::string Utilities::toXMLString(const DerivedData& data,
+std::u8string Utilities::toXMLString(const DerivedData& data,
                                    const std::vector<std::string>& schemaPaths_, logging::Logger* logger)
 {
     std::vector<std::filesystem::path> schemaPaths;
     std::transform(schemaPaths_.begin(), schemaPaths_.end(), std::back_inserter(schemaPaths),
         [](const std::string& s) { return s; });
 
-    const auto result = toXMLString(data, &schemaPaths, logger);
+    return toXMLString(data, &schemaPaths, logger);
+}
+std::string Utilities::toXMLString_(const DerivedData& data,
+    const std::vector<std::string>& schemaPaths,
+    logging::Logger* logger)
+{
+    const auto result = toXMLString(data, schemaPaths, logger);
     return str::to_native(result);
 }
 std::u8string Utilities::toXMLString(const DerivedData& data,