diff --git a/strictdoc/backend/excel/export/excel_generator.py b/strictdoc/backend/excel/export/excel_generator.py
index b2a44e5a2..42e2330bf 100644
--- a/strictdoc/backend/excel/export/excel_generator.py
+++ b/strictdoc/backend/excel/export/excel_generator.py
@@ -204,24 +204,6 @@ def _export_single_document(
                             columns[field][MAX_WIDTH_KEY] = max(
                                 value_len, columns[field][MAX_WIDTH_KEY]
                             )
-                        elif hasattr(node, "special_fields"):
-                            if len(node.special_fields):
-                                for special_field in node.special_fields:
-                                    if (
-                                        special_field.field_name.upper()
-                                        == field_uc
-                                    ):
-                                        value = special_field.field_value
-                                        worksheet.write(row, idx, value)
-                                        if (
-                                            value
-                                            and len(value)
-                                            > columns[field][MAX_WIDTH_KEY]
-                                        ):
-                                            columns[field][MAX_WIDTH_KEY] = len(
-                                                value
-                                            )
-                                        break
 
                     row += 1
 
diff --git a/strictdoc/backend/sdoc/models/node.py b/strictdoc/backend/sdoc/models/node.py
index ae88cd7f0..d307f94d2 100644
--- a/strictdoc/backend/sdoc/models/node.py
+++ b/strictdoc/backend/sdoc/models/node.py
@@ -237,11 +237,6 @@ def get_type_string() -> str:
     def get_node_type_string(self) -> Optional[str]:
         return self.node_type
 
-    def get_display_node_type_string(self) -> Optional[str]:
-        if self.is_composite:
-            return f"[[{self.node_type}]]"
-        return f"[{self.node_type}]"
-
     def get_display_title(
         self,
         include_toc_number: bool = True,  # noqa: ARG002
diff --git a/strictdoc/core/traceability_index.py b/strictdoc/core/traceability_index.py
index 0963ed70a..f4b11b200 100644
--- a/strictdoc/core/traceability_index.py
+++ b/strictdoc/core/traceability_index.py
@@ -976,29 +976,6 @@ def validate_can_remove_node(
                     f"with incoming relations from:\n{nodes_list_message}."
                 )
 
-    def validate_can_create_uid(
-        self, uid: str, existing_node_mid: Optional[MID]
-    ) -> None:
-        assert isinstance(uid, str), uid
-        assert len(uid) > 0, uid
-
-        existing_node_with_uid: Union[SDocDocument, SDocNode, None] = (
-            self.get_node_by_uid_weak(uid)
-        )
-
-        if existing_node_with_uid is None:
-            return
-
-        if existing_node_mid is not None:
-            if existing_node_with_uid.reserved_mid == existing_node_mid:
-                return
-
-        raise SingleValidationError(
-            "UID uniqueness validation error: "
-            "There is already an existing node "
-            f"with this UID: {existing_node_with_uid.get_display_title()}."
-        )
-
     def clone_to_bundle_document(
         self, project_config: ProjectConfig
     ) -> Tuple["TraceabilityIndex", SDocDocument]: