diff --git a/dmp-backend/core/pom.xml b/dmp-backend/core/pom.xml
index 6f863585b..bee3e6477 100644
--- a/dmp-backend/core/pom.xml
+++ b/dmp-backend/core/pom.xml
@@ -47,7 +47,7 @@
         <dependency>
             <groupId>gr.cite.opendmp</groupId>
             <artifactId>file-transformer-base</artifactId>
-            <version>0.0.3</version>
+            <version>1.0.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>gr.cite</groupId>
diff --git a/dmp-backend/core/src/main/java/eu/eudat/model/builder/filetransformer/DescriptionTemplateDefinitionFileTransformerBuilder.java b/dmp-backend/core/src/main/java/eu/eudat/model/builder/filetransformer/DescriptionTemplateDefinitionFileTransformerBuilder.java
index fecd617ee..cf0463d02 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/model/builder/filetransformer/DescriptionTemplateDefinitionFileTransformerBuilder.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/model/builder/filetransformer/DescriptionTemplateDefinitionFileTransformerBuilder.java
@@ -98,8 +98,12 @@ public class DescriptionTemplateDefinitionFileTransformerBuilder extends BaseFil
             m.setExtendedDescription(d.getExtendedDescription());
             m.setMultiplicity(d.getMultiplicity());
             m.setNumbering(d.getNumbering());
-            m.setSections(collectSections(d.getSections()));
-            m.setFieldSets(collectFieldSet(d.getFieldSets()));
+            if (d.getSections() != null && !d.getSections().isEmpty()) {
+                m.setSections(collectSections(d.getSections()));
+            }
+            if (d.getFieldSets() != null && !d.getFieldSets().isEmpty()) {
+                m.setFieldSets(collectFieldSet(d.getFieldSets()));
+            }
             result.add(m);
         }
         return result;
@@ -135,7 +139,9 @@ public class DescriptionTemplateDefinitionFileTransformerBuilder extends BaseFil
             m.setDefaultValue(d.getDefaultValue());
             m.setIncludeInExport(d.getIncludeInExport());
             m.setValidations(d.getValidations().stream().map(fieldValidationType -> FieldValidationType.of(fieldValidationType.getValue())).toList());
-            m.setVisibilityRules(convertVisibilityRules(d.getVisibilityRules()));
+            if (d.getVisibilityRules() != null && !d.getVisibilityRules().isEmpty()) {
+                m.setVisibilityRules(convertVisibilityRules(d.getVisibilityRules()));
+            }
             m.setData(convertData(d.getData()));
             result.add(m);
         }
@@ -157,11 +163,11 @@ public class DescriptionTemplateDefinitionFileTransformerBuilder extends BaseFil
             BaseFieldDataFileTransformerModel m;
             switch (data) {
                 case ExternalSelectDataEntity d -> {
-                    m = new AutoCompleteDataFileTransformerModel();
+                    m = new ExternalSelectDataFileTransformerModel();
                     m.setLabel(d.getLabel());
                     m.setFieldType(FieldType.of(d.getFieldType().getValue()));
-                    ((AutoCompleteDataFileTransformerModel)m).setMultiAutoComplete(d.getMultipleSelect());
-                    ((AutoCompleteDataFileTransformerModel) m).setAutoCompleteSingleDataList(convertAutoCompleteSingleData(d.getSources()));
+                    ((ExternalSelectDataFileTransformerModel)m).setMultipleSelect(d.getMultipleSelect());
+                    ((ExternalSelectDataFileTransformerModel) m).setSources(convertAutoCompleteSingleData(d.getSources()));
                 }
                 case ExternalDatasetDataEntity d -> {
                     m = new ExternalDatasetDataFileTransformerModel();
@@ -183,21 +189,31 @@ public class DescriptionTemplateDefinitionFileTransformerBuilder extends BaseFil
                     ((UploadDataFileTransformerModel) m).setTypes(convertUploadDataOptions(d.getTypes()));
                 }
                 case SelectDataEntity d -> {
-                    m = new WordListDataFileTransformerModel();
+                    m = new SelectDataFileTransformerModel();
                     m.setLabel(d.getLabel());
                     m.setFieldType(FieldType.of(d.getFieldType().getValue()));
-                    ((WordListDataFileTransformerModel) m).setMultiList(d.getMultipleSelect());
-                    ((WordListDataFileTransformerModel) m).setOptions(d.getOptions().stream().map(this::convertComboBoxOption).toList());
+                    ((SelectDataFileTransformerModel) m).setMultipleSelect(d.getMultipleSelect());
+                    ((SelectDataFileTransformerModel) m).setOptions(d.getOptions().stream().map(this::convertComboBoxOption).toList());
+                }
+                case LabelAndMultiplicityDataEntity d -> {
+                    m = new LabelAndMultiplicityDataFileTransformerModel();
+                    m.setLabel(d.getLabel());
+                    m.setFieldType(FieldType.of(d.getFieldType().getValue()));
+                    ((LabelAndMultiplicityDataFileTransformerModel)m).setMultipleSelect(d.getMultipleSelect());
+                }
+                default -> {
+                    m = new LabelDataFileTransformerModel();
+                    m.setLabel(data.getLabel());
+                    m.setFieldType(FieldType.of(data.getFieldType().getValue()));
                 }
-                default -> m = null;
             }
         return m;
     }
 
-    private List<RadioBoxOptionFileTransformerModel> convertRadioBoxOptions(List<RadioBoxDataEntity.RadioBoxDataOptionEntity> data) {
-        List<RadioBoxOptionFileTransformerModel> result = new ArrayList<>();
+    private List<RadioBoxDataFileTransformerModel.RadioBoxDataOptionFileTransformerModel> convertRadioBoxOptions(List<RadioBoxDataEntity.RadioBoxDataOptionEntity> data) {
+        List<RadioBoxDataFileTransformerModel.RadioBoxDataOptionFileTransformerModel> result = new ArrayList<>();
         for (RadioBoxDataEntity.RadioBoxDataOptionEntity d : data) {
-            RadioBoxOptionFileTransformerModel m = new RadioBoxOptionFileTransformerModel();
+            RadioBoxDataFileTransformerModel.RadioBoxDataOptionFileTransformerModel m = new RadioBoxDataFileTransformerModel.RadioBoxDataOptionFileTransformerModel();
             m.setLabel(d.getLabel());
             m.setValue(d.getValue());
             result.add(m);
@@ -205,19 +221,25 @@ public class DescriptionTemplateDefinitionFileTransformerBuilder extends BaseFil
         return result;
     }
 
-    private List<AutoCompleteSingleDataFileTransformerModel> convertAutoCompleteSingleData(List<ExternalSelectDataEntity.ExternalSelectSourceEntity> data) {
-        List<AutoCompleteSingleDataFileTransformerModel> result = new ArrayList<>();
+    private List<ExternalSelectDataFileTransformerModel.ExternalSelectSourceFileTransformerModel> convertAutoCompleteSingleData(List<ExternalSelectDataEntity.ExternalSelectSourceEntity> data) {
+        List<ExternalSelectDataFileTransformerModel.ExternalSelectSourceFileTransformerModel> result = new ArrayList<>();
         for (ExternalSelectDataEntity.ExternalSelectSourceEntity d : data) {
-            AutoCompleteSingleDataFileTransformerModel m = new AutoCompleteSingleDataFileTransformerModel();
+            ExternalSelectDataFileTransformerModel.ExternalSelectSourceFileTransformerModel m = new ExternalSelectDataFileTransformerModel.ExternalSelectSourceFileTransformerModel();
             m.setUrl(d.getUrl());
-            m.setAutoCompleteOptions(convertComboBoxOption(d.getSourceBinding()));
+            m.setMethod(d.getMethod());
+            m.setHasAuth(d.getHasAuth());
+            m.setOptionsRoot(d.getOptionsRoot());
+            if (d.getAuth() != null) {
+                m.setAuth(convertAuthData(d.getAuth()));
+            }
+            m.setSourceBinding(convertComboBoxOption(d.getSourceBinding()));
             result.add(m);
         }
         return result;
     }
 
-    private ComboBoxOptionFileTransformerModel convertComboBoxOption(ExternalSelectDataEntity.ExternalSelectSourceBindingEntity data) {
-        ComboBoxOptionFileTransformerModel m = new ComboBoxOptionFileTransformerModel();
+    private ExternalSelectDataFileTransformerModel.ExternalSelectSourceBindingFileTransformerModel convertComboBoxOption(ExternalSelectDataEntity.ExternalSelectSourceBindingEntity data) {
+        ExternalSelectDataFileTransformerModel.ExternalSelectSourceBindingFileTransformerModel m = new ExternalSelectDataFileTransformerModel.ExternalSelectSourceBindingFileTransformerModel();
 //        m.setUri(data.getUri()); 
         m.setSource(data.getSource());
         m.setLabel(data.getLabel());
@@ -225,19 +247,27 @@ public class DescriptionTemplateDefinitionFileTransformerBuilder extends BaseFil
         return m;
     }
 
-    private ComboBoxOptionFileTransformerModel convertComboBoxOption(SelectDataEntity.OptionEntity data) {
-        ComboBoxOptionFileTransformerModel m = new ComboBoxOptionFileTransformerModel();
-//        m.setUri(data.getUri()); 
-//        m.setSource(data.getSource());
+    private ExternalSelectDataFileTransformerModel.ExternalSelectAuthDataFileTransformerModel convertAuthData(ExternalSelectDataEntity.ExternalSelectAuthDataEntity data) {
+        ExternalSelectDataFileTransformerModel.ExternalSelectAuthDataFileTransformerModel m = new ExternalSelectDataFileTransformerModel.ExternalSelectAuthDataFileTransformerModel();
+        m.setMethod(data.getMethod());
+        m.setUrl(data.getUrl());
+        m.setType(data.getType());
+        m.setBody(data.getBody());
+        m.setPath(data.getPath());
+        return m;
+    }
+
+    private SelectDataFileTransformerModel.OptionFileTransformerModel convertComboBoxOption(SelectDataEntity.OptionEntity data) {
+        SelectDataFileTransformerModel.OptionFileTransformerModel m = new SelectDataFileTransformerModel.OptionFileTransformerModel();
         m.setLabel(data.getLabel());
         m.setValue(data.getValue());
         return m;
     }
 
-    private List<UploadOptionFileTransformerModel> convertUploadDataOptions(List<UploadDataEntity.UploadDataOptionEntity> data) {
-        List<UploadOptionFileTransformerModel> result = new ArrayList<>();
+    private List<UploadDataFileTransformerModel.UploadDataOptionFileTransformerModel> convertUploadDataOptions(List<UploadDataEntity.UploadDataOptionEntity> data) {
+        List<UploadDataFileTransformerModel.UploadDataOptionFileTransformerModel> result = new ArrayList<>();
         for (UploadDataEntity.UploadDataOptionEntity d : data) {
-            UploadOptionFileTransformerModel m = new UploadOptionFileTransformerModel();
+            UploadDataFileTransformerModel.UploadDataOptionFileTransformerModel m = new UploadDataFileTransformerModel.UploadDataOptionFileTransformerModel();
             m.setLabel(d.getLabel());
             m.setValue(d.getValue());
             result.add(m);
diff --git a/dmp-backend/core/src/main/java/eu/eudat/model/builder/filetransformer/DmpBlueprintFileTransformerBuilder.java b/dmp-backend/core/src/main/java/eu/eudat/model/builder/filetransformer/DmpBlueprintFileTransformerBuilder.java
index 9d85492d7..7fe4e3580 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/model/builder/filetransformer/DmpBlueprintFileTransformerBuilder.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/model/builder/filetransformer/DmpBlueprintFileTransformerBuilder.java
@@ -94,7 +94,9 @@ public class DmpBlueprintFileTransformerBuilder extends BaseFileTransformerBuild
             m.setLabel(section.getLabel());
             m.setOrdinal(section.getOrdinal());
             m.setDescription(section.getDescription());
-            m.setFields(mapFields(section.getFields()));
+            if (section.getFields() != null && !section.getFields().isEmpty()) {
+                m.setFields(mapFields(section.getFields()));
+            }
             m.setHasTemplates(section.getHasTemplates());
             result.getSections().add(m);
         });
diff --git a/dmp-backend/core/src/main/java/eu/eudat/service/transformer/FileTransformerService.java b/dmp-backend/core/src/main/java/eu/eudat/service/transformer/FileTransformerService.java
index a70090103..15d6e13d5 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/service/transformer/FileTransformerService.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/service/transformer/FileTransformerService.java
@@ -111,7 +111,6 @@ public class FileTransformerService {
             List<TransformerRepository> repositories = transformerProperties.getSources().stream().map(depositSource -> getRepository(depositSource.getCodes().get(0))).toList();
 
             repositories = new ArrayList<>(repositories);
-            List<TransformerRepository> toDelete = new ArrayList<>();
             repositories.forEach((client) -> {
                 try {
                     FileTransformerConfiguration repositoryConfigs = client.getConfiguration();
@@ -119,12 +118,10 @@ public class FileTransformerService {
                         configurations.addAll(repositoryConfigs.getExportVariants());
                     }
                 } catch (Exception e) {
-                    toDelete.add(client);
+                    logger.warn(e.getLocalizedMessage(), e);
                 }
             });
 
-            repositories.removeAll(toDelete);
-
             configs = new TransformerCacheModel(configurations);
             this.fileTransformerConfigurationCache.put("base", configs);
         }
diff --git a/dmp-backend/web/pom.xml b/dmp-backend/web/pom.xml
index 660396550..e3587f03b 100644
--- a/dmp-backend/web/pom.xml
+++ b/dmp-backend/web/pom.xml
@@ -202,6 +202,11 @@
             <artifactId>exceptions-web</artifactId>
             <version>1.0.0</version>
         </dependency>
+        <dependency>
+            <groupId>gr.cite.opendmp</groupId>
+            <artifactId>file-transformer-base</artifactId>
+            <version>1.0.0-SNAPSHOT</version>
+        </dependency>
     </dependencies>
 
     <build>