diff --git a/sct-commons/src/main/java/org/lfenergy/compas/sct/commons/scl/dtt/LNodeTypeAdapter.java b/sct-commons/src/main/java/org/lfenergy/compas/sct/commons/scl/dtt/LNodeTypeAdapter.java
index 78b312f61..ae43d7a8c 100644
--- a/sct-commons/src/main/java/org/lfenergy/compas/sct/commons/scl/dtt/LNodeTypeAdapter.java
+++ b/sct-commons/src/main/java/org/lfenergy/compas/sct/commons/scl/dtt/LNodeTypeAdapter.java
@@ -6,6 +6,7 @@
 
 import lombok.NonNull;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.tuple.Pair;
 import org.lfenergy.compas.scl2007b4.model.TDO;
 import org.lfenergy.compas.scl2007b4.model.TDOType;
@@ -20,7 +21,6 @@
 import org.lfenergy.compas.sct.commons.util.Utils;
 
 import java.util.*;
-import java.util.stream.Collectors;
 
 /**
  * A representation of the model object
@@ -41,7 +41,7 @@
  *      <li>{@link LNodeTypeAdapter#getId() <em>Returns the value of the <b>id </b>attribute</em>}</li>
  *      <li>{@link LNodeTypeAdapter#getLNClass <em>Returns the value of the <b>lnClass </b>attribute</em>}</li>
  *      <li>{@link LNodeTypeAdapter#getDataAttributeRefs(DataAttributeRef)}  <em>Returns <b>DataAttributeRef </b> list</em>}</li>
- *      <li>{@link LNodeTypeAdapter#getDataAttributeRefs(String)}  <em>Returns <b>DataAttributeRef </b> list</em>}</li>
+ *      <li>{@link LNodeTypeAdapter#getDataAttributeRef(String)}  <em>Returns <b>DataAttributeRef </b> list</em>}</li>
  *    </ul>
  *   <li>Checklist functions</li>
  *    <ul>
@@ -95,10 +95,8 @@ public boolean hasSameContentAs(TLNodeType tlNodeType) {
             return false;
         }
 
-        if (Objects.equals(
-                currentElem.getLnClass().toArray(new String[0]),
-                tlNodeType.getLnClass().toArray(new String[0])
-        ) || !Objects.equals(currentElem.getIedType(), tlNodeType.getIedType())) {
+        if (Objects.equals(currentElem.getLnClass(), tlNodeType.getLnClass())
+            || !Objects.equals(currentElem.getIedType(), tlNodeType.getIedType())) {
             return false;
         }
 
@@ -112,9 +110,9 @@ public boolean hasSameContentAs(TLNodeType tlNodeType) {
             TDO inTDO = inTDOs.get(i);
             TDO thisTDO = thisTDOs.get(i);
             if (!thisTDO.getType().equals(inTDO.getType())
-                    || !thisTDO.getName().equals(inTDO.getName())
-                    || thisTDO.isTransient() != inTDO.isTransient()
-                    || !Objects.equals(thisTDO.getAccessControl(), inTDO.getAccessControl())) {
+                || !thisTDO.getName().equals(inTDO.getName())
+                || thisTDO.isTransient() != inTDO.isTransient()
+                || !Objects.equals(thisTDO.getAccessControl(), inTDO.getAccessControl())) {
                 return false;
             }
         }
@@ -139,7 +137,7 @@ public boolean containsDOWithDOTypeId(String doTypeId) {
      */
     public String getLNClass() {
         if (!currentElem.getLnClass().isEmpty()) {
-            return currentElem.getLnClass().get(0);
+            return currentElem.getLnClass().getFirst();
         }
         return null;
     }
@@ -195,7 +193,7 @@ public List<DataAttributeRef> getDataAttributeRefs(@NonNull DataAttributeRef fil
     }
 
     /**
-     * Return a list of summarized Data Attribute References beginning from given this LNodeType.
+     * Return a DataAttributeRef beginning from this LNodeType.
      * The key point in the algorithm is to find where the DO/SDO part ends and the DA/BDA part begins.
      * Once it is found, we can use the usual method DOTypeAdapter#getDataAttributeRefs to retrieve the DataAttributeRef
      * For example, with input "Do1.da1", we want to find the "da1" which is the DA/BDA part and also the DOTypeAdapter of "Do1" (to call DOTypeAdapter#getDataAttributeRefs)
@@ -209,19 +207,19 @@ public List<DataAttributeRef> getDataAttributeRefs(@NonNull DataAttributeRef fil
      *
      * @param dataRef complete reference of Data Attribute including DO name, SDO names (optional), DA name, BDA names (optional).
      *                Ex: Do.sdo1.sdo2.da.bda1.bda2
-     * @return list of completed Data Attribute References beginning from this LNodeType.
+     * @return the Data Attribute References beginning from this LNodeType.
      * @apiNote This method doesn't check relationship between DO/SDO and DA. Check should be done by caller
      */
-    public DataAttributeRef getDataAttributeRefs(@NonNull String dataRef) {
+    public Optional<DataAttributeRef> getDataAttributeRef(@NonNull String dataRef) {
         LinkedList<String> dataRefList = new LinkedList<>(Arrays.asList(dataRef.split("\\.")));
-        if (dataRefList.size() < 2) {
-            throw new ScdException("Invalid data reference %s. At least DO name and DA name are required".formatted(dataRef));
+        if (dataRefList.size() < 2 || dataRefList.stream().anyMatch(StringUtils::isBlank)) {
+            throw new ScdException("Invalid data reference '%s'. At least DO name and DA name are required".formatted(dataRef));
         }
         // 1. Get the DO
         String doName = dataRefList.remove();
         return getDOAdapterByName(doName)
                 .flatMap(doAdapter -> getDataTypeTemplateAdapter().getDOTypeAdapterById(doAdapter.getType()))
-                .map(doTypeAdapter -> {
+                .flatMap(doTypeAdapter -> {
                     // 2. find the SDOs, if any
                     List<String> sdoAccumulator = new ArrayList<>();
                     List<String> daAccumulator = new ArrayList<>();
@@ -251,17 +249,14 @@ public DataAttributeRef getDataAttributeRefs(@NonNull String dataRef) {
                     rootDataAttributeRef.setDoName(doTypeName);
                     DataAttributeRef filter = new DataAttributeRef();
                     filter.setDaName(new DaTypeName(String.join(".", daAccumulator)));
-                    List<DataAttributeRef> dataAttributeRefs = deepestDo.getDataAttributeRefs(rootDataAttributeRef, filter);
-                    // We want exactly one result
-                    if (dataAttributeRefs.size() > 1) {
-                        throw new ScdException("Multiple Data Attribute found for this data reference %s in LNodeType.lnClass=%s, LNodeType.id=%s. Found DA : %s ".formatted(dataRef, getLNClass(), getId(), dataAttributeRefs.stream().map(DataAttributeRef::getDataAttributes).collect(Collectors.joining(", "))));
-                    }
-                    if (dataAttributeRefs.isEmpty() || !dataRef.equals(dataAttributeRefs.get(0).getDataAttributes())) {
-                        return null;
-                    }
-                    return dataAttributeRefs.get(0);
-                }).orElseThrow(() ->
-                        new ScdException("No Data Attribute found with this reference %s for LNodeType.lnClass=%s, LNodeType.id=%s ".formatted(dataRef, getLNClass(), getId())));
+                    return deepestDo.getDataAttributeRefs(rootDataAttributeRef, filter)
+                            .stream()
+                            .filter(dataAttributeRef -> dataRef.equals(dataAttributeRef.getDataAttributes()))
+                            .reduce((dar1, dar2) -> {
+                                // 2 data attribute ref with the same name in the same LNodeType means the SCL is not valid, according to XSD
+                                throw new ScdException("Multiple Data Attribute found for this data reference '%s' in LNodeType.lnClass=%s, LNodeType.id=%s. Found DA : '%s' ".formatted(dataRef, getLNClass(), getId(), dar1));
+                            });
+                });
     }
 
     /**
@@ -353,7 +348,7 @@ public void checkDoAndDaTypeName(@NonNull DoTypeName doTypeName, @NonNull DaType
             daTypeName.setFc(daAdapter.getCurrentElem().getFc());
             DATypeAdapter daTypeAdapter = parentAdapter.getDATypeAdapterById(daAdapter.getType())
                     .orElseThrow(() -> new ScdException(String.format("Unknown DAType (%s) referenced by DA(%s)", daAdapter.getType(), daAdapter.getName()))
-            );
+                    );
             daTypeAdapter.check(daTypeName);
         }
     }
diff --git a/sct-commons/src/test/java/org/lfenergy/compas/sct/commons/scl/dtt/DataTypeTemplateTestUtils.java b/sct-commons/src/test/java/org/lfenergy/compas/sct/commons/scl/dtt/DataTypeTemplateTestUtils.java
index 6f68ab934..020e9ae7e 100644
--- a/sct-commons/src/test/java/org/lfenergy/compas/sct/commons/scl/dtt/DataTypeTemplateTestUtils.java
+++ b/sct-commons/src/test/java/org/lfenergy/compas/sct/commons/scl/dtt/DataTypeTemplateTestUtils.java
@@ -15,6 +15,7 @@ public class DataTypeTemplateTestUtils {
     public static final String SCD_DTT = "/dtt-test-schema-conf/scd_dtt_import_test.xml";
     public static final String SCD_DTT_DIFF_CONTENT_SAME_ID = "/dtt-test-schema-conf/scd_dtt_import_sameid-diff-content-test.xml";
     public static final String SCD_DTT_DO_SDO_DA_BDA = "/dtt-test-schema-conf/scd_dtt_do_sdo_da_bda.xml";
+    public static final String SCD_DTT_DO_MULTIPLE_DA = "/dtt-test-schema-conf/scd_dtt_do_multiple_da.xml";
 
     public static DataTypeTemplateAdapter initDttAdapterFromFile(String fileName) {
         SCL scd = SclTestMarshaller.getSCLFromFile(fileName);
diff --git a/sct-commons/src/test/java/org/lfenergy/compas/sct/commons/scl/dtt/LNodeTypeAdapterTest.java b/sct-commons/src/test/java/org/lfenergy/compas/sct/commons/scl/dtt/LNodeTypeAdapterTest.java
index 319c2ee14..e72bfefd1 100644
--- a/sct-commons/src/test/java/org/lfenergy/compas/sct/commons/scl/dtt/LNodeTypeAdapterTest.java
+++ b/sct-commons/src/test/java/org/lfenergy/compas/sct/commons/scl/dtt/LNodeTypeAdapterTest.java
@@ -14,6 +14,7 @@
 import org.lfenergy.compas.sct.commons.scl.SclRootAdapter;
 
 import java.util.List;
+import java.util.Optional;
 
 import static org.assertj.core.api.Assertions.*;
 import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
@@ -126,7 +127,7 @@ void containsDOWithDOTypeId_should_check_if_LNodeType_contains_DO_with_specific_
     void testGetDataAttributeRefs() {
         // Given
         DataTypeTemplateAdapter dttAdapter = initDttAdapterFromFile(SCD_DTT);
-        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").get());
+        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").orElseThrow());
         DataAttributeRef rootDataAttributeRef = new DataAttributeRef();
         rootDataAttributeRef.setDoName(new DoTypeName("Op"));
         DataAttributeRef filter = new DataAttributeRef();
@@ -151,39 +152,43 @@ void testGetDataAttributeRefs() {
 
     @Test
     @Tag("issue-321")
-    void testGetDataAttributeRefsString() {
+    void getDataAttributeRef_should_succeed() {
         // Given
         DataTypeTemplateAdapter dttAdapter = initDttAdapterFromFile(SCD_DTT);
-        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").get());
+        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").orElseThrow());
         // When
-        var dataAttributeRefs = lNodeTypeAdapter.getDataAttributeRefs("StrVal.origin.origin.ctlVal");
+        Optional<DataAttributeRef> dataAttributeRefs = lNodeTypeAdapter.getDataAttributeRef("StrVal.origin.origin.ctlVal");
         // Then
-        assertThat(dataAttributeRefs).isNotNull();
+        assertThat(dataAttributeRefs).isPresent();
     }
 
     @Test
-    void getDataAttributeRefs_should_find_DO_SDO_DA_and_BDA() {
+    void getDataAttributeRef_should_find_DO_SDO_DA_and_BDA() {
         // Given
         DataTypeTemplateAdapter dttAdapter = initDttAdapterFromFile(SCD_DTT_DO_SDO_DA_BDA);
         LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").orElseThrow());
         // When
-        DataAttributeRef dataAttributeRefs = lNodeTypeAdapter.getDataAttributeRefs("Do1.sdo1.sdo2.da2.bda1.bda2");
+        Optional<DataAttributeRef> optDataAttributeRef = lNodeTypeAdapter.getDataAttributeRef("Do1.sdo1.sdo2.da2.bda1.bda2");
         // Then
-        assertThat(dataAttributeRefs).extracting(DataAttributeRef::getDoRef, DataAttributeRef::getDaRef)
+        assertThat(optDataAttributeRef).isPresent();
+        DataAttributeRef dataAttributeRef = optDataAttributeRef.get();
+        assertThat(dataAttributeRef).extracting(DataAttributeRef::getDoRef, DataAttributeRef::getDaRef)
                 .containsExactly("Do1.sdo1.sdo2", "da2.bda1.bda2");
-        assertThat(dataAttributeRefs.getDoName().getCdc()).isEqualTo(TPredefinedCDCEnum.WYE);
-        assertThat(dataAttributeRefs.getDaName()).extracting(DaTypeName::getBType, DaTypeName::getFc)
+        assertThat(dataAttributeRef.getDoName().getCdc()).isEqualTo(TPredefinedCDCEnum.WYE);
+        assertThat(dataAttributeRef.getDaName()).extracting(DaTypeName::getBType, DaTypeName::getFc)
                 .containsExactly(TPredefinedBasicTypeEnum.ENUM, TFCEnum.ST);
     }
 
     @Test
-    void getDataAttributeRefs_should_find_DO_and_DA() {
+    void getDataAttributeRef_should_find_DO_and_DA() {
         // Given
         DataTypeTemplateAdapter dttAdapter = initDttAdapterFromFile(SCD_DTT_DO_SDO_DA_BDA);
         LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").orElseThrow());
         // When
-        DataAttributeRef dataAttributeRefs = lNodeTypeAdapter.getDataAttributeRefs("Do1.da1");
+        Optional<DataAttributeRef> optDataAttributeRefs = lNodeTypeAdapter.getDataAttributeRef("Do1.da1");
         // Then
+        assertThat(optDataAttributeRefs).isPresent();
+        DataAttributeRef dataAttributeRefs = optDataAttributeRefs.get();
         assertThat(dataAttributeRefs).extracting(DataAttributeRef::getDoRef, DataAttributeRef::getDaRef)
                 .containsExactly("Do1", "da1");
         assertThat(dataAttributeRefs.getDoName().getCdc()).isEqualTo(TPredefinedCDCEnum.WYE);
@@ -191,23 +196,54 @@ void getDataAttributeRefs_should_find_DO_and_DA() {
                 .containsExactly(TPredefinedBasicTypeEnum.BOOLEAN, TFCEnum.ST);
     }
 
+
+    @Test
+    void getDataAttributeRef_when_same_da_in_multiple_sdo_should_find_the_correct_DO_DA() {
+        // Given
+        DataTypeTemplateAdapter dttAdapter = initDttAdapterFromFile(SCD_DTT_DO_MULTIPLE_DA);
+        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").orElseThrow());
+        // When
+        Optional<DataAttributeRef> optDataAttributeRef = lNodeTypeAdapter.getDataAttributeRef("Do1.da1");
+        // Then
+        assertThat(optDataAttributeRef).isPresent();
+        DataAttributeRef dataAttributeRef = optDataAttributeRef.get();
+        assertThat(dataAttributeRef).extracting(DataAttributeRef::getDoRef, DataAttributeRef::getDaRef)
+                .containsExactly("Do1", "da1");
+        assertThat(dataAttributeRef.getDoName().getCdc()).isEqualTo(TPredefinedCDCEnum.WYE);
+        assertThat(dataAttributeRef.getDaName()).extracting(DaTypeName::getBType, DaTypeName::getFc)
+                .containsExactly(TPredefinedBasicTypeEnum.BOOLEAN, TFCEnum.ST);
+    }
+
+
     @ParameterizedTest
-    @ValueSource(strings = {"", "malformed", "Do1", "InexistantDo.da1", "Do1.inexistantDa", "Do1.da1.inexistantBda", "Do1.sdo1.inexistantSdo.da2", "Do1.sdo1.sdo2.da2.bda1.inexistantBda"})
-    void getDataAttributeRefs_when_dataRef_not_found_should_throw_exception(String dataRef) {
+    @ValueSource(strings = {"", "malformed", "Do1", "Do1.", ".da1"})
+    void getDataAttributeRef_when_dataRef_parameter_malformed_should_throw_exception(String dataRef) {
         // Given
         DataTypeTemplateAdapter dttAdapter = initDttAdapterFromFile(SCD_DTT_DO_SDO_DA_BDA);
         LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").orElseThrow());
         // When & Then
-        assertThatThrownBy(() -> lNodeTypeAdapter.getDataAttributeRefs(dataRef))
+        assertThatThrownBy(() -> lNodeTypeAdapter.getDataAttributeRef(dataRef))
                 .isInstanceOf(ScdException.class);
     }
 
+    @ParameterizedTest
+    @ValueSource(strings = {"InexistantDo.da1", "Do1.inexistantDa", "Do1.da1.inexistantBda", "Do1.sdo1.inexistantSdo.da2", "Do1.sdo1.sdo2.da2.bda1.inexistantBda"})
+    void getDataAttributeRef_when_dataRef_not_found_should_return_empty(String dataRef) {
+        // Given
+        DataTypeTemplateAdapter dttAdapter = initDttAdapterFromFile(SCD_DTT_DO_SDO_DA_BDA);
+        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").orElseThrow());
+        // When & Then
+        Optional<DataAttributeRef> optDataAttributeRef = lNodeTypeAdapter.getDataAttributeRef(dataRef);
+        // Then
+        assertThat(optDataAttributeRef).isEmpty();
+    }
+
     @Test
     @Tag("issue-321")
     void testCheck() {
         // Given
         DataTypeTemplateAdapter dttAdapter = initDttAdapterFromFile(SCD_DTT);
-        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").get());
+        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").orElseThrow());
         DoTypeName doTypeName1 = new DoTypeName("");
         DaTypeName daTypeName1 = new DaTypeName("");
         // When Then
@@ -239,7 +275,7 @@ void getDataAttributeRefByDaName_should_return_list_of_DataAttributeRef() {
         // Given
         DataTypeTemplateAdapter dttAdapter = initDttAdapterFromFile(SCD_DTT_DIFF_CONTENT_SAME_ID);
         DaTypeName daTypeName = new DaTypeName("antRef","origin.ctlVal");
-        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").get());
+        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").orElseThrow());
         // When
         List<DataAttributeRef> dataAttributeRefs = assertDoesNotThrow(()-> lNodeTypeAdapter.getDataAttributeRefByDaName(daTypeName));
         // Then
@@ -271,7 +307,7 @@ void addPrivate_with_type_and_source_should_create_Private() {
     void elementXPath_should_return_expected_xpath_value() {
         // Given
         DataTypeTemplateAdapter dttAdapter = initDttAdapterFromFile(SCD_DTT);
-        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() ->dttAdapter.getLNodeTypeAdapterById("LN1").get());
+        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("LN1").orElseThrow());
         // When
         String result = lNodeTypeAdapter.elementXPath();
         // Then
@@ -299,7 +335,7 @@ void findMatchingDOType_shouldFindOneDO() {
         dttAdapter.getCurrentElem().getDOType().add(tdoType);
 
         dttAdapter.getCurrentElem().getLNodeType().add(tlNodeType);
-        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("ID").get());
+        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("ID").orElseThrow());
 
         ExtRefSignalInfo signalInfo = new ExtRefSignalInfo();
         signalInfo.setPDO("P_DO12");
@@ -335,7 +371,7 @@ void checkMatchingDOType_whenDOUnknown_shouldThrowException() {
         dttAdapter.getCurrentElem().getDOType().add(tdoType);
 
         dttAdapter.getCurrentElem().getLNodeType().add(tlNodeType);
-        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("ID").get());
+        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("ID").orElseThrow());
         //When Then
         assertThatThrownBy(() -> lNodeTypeAdapter.findMatchingDOType(signalInfo))
                 .isInstanceOf(IllegalArgumentException.class)
@@ -368,7 +404,7 @@ void checkMatchingDOType_whenDONotReferenced_shouldThrowException() {
         dttAdapter.getCurrentElem().getDOType().add(tdoType);
 
         dttAdapter.getCurrentElem().getLNodeType().add(tlNodeType);
-        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("ID").get());
+        LNodeTypeAdapter lNodeTypeAdapter = assertDoesNotThrow(() -> dttAdapter.getLNodeTypeAdapterById("ID").orElseThrow());
         //When Then
         assertThatThrownBy(() -> lNodeTypeAdapter.findMatchingDOType(signalInfo))
                 .isInstanceOf(IllegalArgumentException.class)
diff --git a/sct-commons/src/test/resources/dtt-test-schema-conf/scd_dtt_do_multiple_da.xml b/sct-commons/src/test/resources/dtt-test-schema-conf/scd_dtt_do_multiple_da.xml
new file mode 100644
index 000000000..272b73d1c
--- /dev/null
+++ b/sct-commons/src/test/resources/dtt-test-schema-conf/scd_dtt_do_multiple_da.xml
@@ -0,0 +1,21 @@
+<!-- SPDX-FileCopyrightText: 2023 RTE FRANCE -->
+<!-- -->
+<!-- SPDX-License-Identifier: Apache-2.0 -->
+<SCL xmlns="http://www.iec.ch/61850/2003/SCL" version="2007" revision="B" release="4">
+    <Header id="HeaderID" version="version" revision="Revision" toolID="toolID"/>
+    <DataTypeTemplates>
+        <LNodeType id="LN1" lnClass="ANCR">
+            <DO name="Do1" type="DO1"/>
+        </LNodeType>
+        <DOType cdc="WYE" id="DO1">
+            <SDO name="sdo1" type="SDO1"/>
+            <SDO name="sdo2" type="SDO1"/>
+            <DA name="da1" bType="BOOLEAN" fc="ST"/>
+            <DA name="unused" bType="BOOLEAN" fc="ST"/>
+        </DOType>
+        <DOType cdc="WYE" id="SDO1">
+            <DA name="da1" bType="BOOLEAN" fc="ST"/>
+            <DA name="unused" bType="BOOLEAN" fc="ST"/>
+        </DOType>
+    </DataTypeTemplates>
+</SCL>