diff --git a/translator/vector/process.py b/translator/vector/process.py
index 9a19d4f..b19d3ac 100644
--- a/translator/vector/process.py
+++ b/translator/vector/process.py
@@ -119,7 +119,8 @@ def process_vector(
         result = _process_graduated(layer, extent, idx, output_dir)
     elif layer.renderer().type() == "singleSymbol":
         result = _process_singlesymbol(layer, extent, idx, output_dir)
-
+    else:
+        result = _process_unsupported_renderer(layer, extent, idx, output_dir)
     return result
 
 
@@ -306,3 +307,15 @@ def _process_singlesymbol(
         "has_unsupported_symbol": has_unsupported_symbol,
         "completed": True,
     }
+
+
+def _process_unsupported_renderer(
+    layer: QgsVectorLayer, extent: QgsRectangle, idx: int, output_dir: str
+) -> dict:
+    return {
+        "idx": idx,
+        "layer_name": layer.name(),
+        "has_unsupported_symbol": False,
+        "reason": "unsupported renderer",
+        "completed": False,
+    }
diff --git a/ui/main_dialog.py b/ui/main_dialog.py
index 11f3f4d..0df0d34 100644
--- a/ui/main_dialog.py
+++ b/ui/main_dialog.py
@@ -107,6 +107,14 @@ def _run(self):
             )
         )
 
+        # list-up layers NOT completed and its reason
+        layers_not_completed = list(
+            map(
+                lambda r: f"{r['layer_name']} : {r['reason']}",
+                list(filter(lambda r: r["completed"] is False, results)),
+            )
+        )
+
         # list-up layers processed successfully: layer_0, layer_2, layer_5, ...
         layers_processed_successfully = list(
             map(
@@ -147,6 +155,9 @@ def _run(self):
             シンプルシンボルに変換しました。\n"
                 + "\n".join(layers_has_unsupported_symbol)
             )
+        if len(layers_not_completed) > 0:
+            msg += "\n\n以下のレイヤーは出力できませんでした。\n"
+            msg += "\n".join(layers_not_completed)
         QMessageBox.information(
             None,
             "完了",