diff --git a/M02_MasterTemplete/M02_MasterTemplete_Store.py b/M02_MasterTemplete/M02_MasterTemplete_Store.py
index 519a58bf..5ee4c9e7 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Store.py
+++ b/M02_MasterTemplete/M02_MasterTemplete_Store.py
@@ -65,9 +65,17 @@ def read(kind: str, name: str) -> dict[str, Any]:
     return {"종류": kind, "이름": name, "판": version_of(raw), "문서": json.loads(raw)}
 
 
+def _check_skeleton(kind: str, doc: Any) -> None:
+    """빈 문서·뼈대 없는 문서는 거절 — 표는 열 목록 · 도면은 entities 목록."""
+    key = "열" if kind == "table" else "entities"
+    if not isinstance(doc, dict) or not isinstance(doc.get(key), list):
+        raise StoreError(400, f"양식 문서에 「{key}」 목록이 없음 — 저장하지 않음")
+
+
 def write(kind: str, name: str, version: str, doc: Any) -> dict[str, Any]:
     """`version` 이 빈 글이면 새로 만듦(이미 있으면 409) · 아니면 그 판일 때만 덮어씀."""
     path = _path(kind, name)
+    _check_skeleton(kind, doc)
     with _LOCK:
         have = version_of(path.read_bytes()) if path.is_file() else ""
         if have != (version or ""):
diff --git a/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts b/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts
index 5418cd04..4da5b2a4 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts
@@ -23,7 +23,7 @@ export interface Selection {
 }
 
 interface EditorHandle {
-  getDoc: () => unknown;
+  getDoc: () => unknown | Promise<unknown>;
   destroy: () => void;
 }
 
@@ -162,7 +162,7 @@ export function createMain(isAdmin: boolean): MainHandle {
     if (!sel) return;
     const at = sel;
     try {
-      const doc = editor ? editor.getDoc() : loaded;
+      const doc = editor ? await editor.getDoc() : loaded;
       const info = await saveTemplate(at.layer, at.kind, at.name, at.projectId, version, doc);
       version = info.판;
       loaded = doc;
diff --git a/resources/tester/test_m02_store.py b/resources/tester/test_m02_store.py
index e271c248..c6090378 100644
--- a/resources/tester/test_m02_store.py
+++ b/resources/tester/test_m02_store.py
@@ -25,7 +25,9 @@ def test_new_save_reopen_delete_and_stale(client):
     assert made.status_code == 200
     v1 = made.json()["판"]
     assert (
-        client.put("/api/m02/templates/table/집계표", json={"판": "", "문서": {}}).status_code
+        client.put(
+            "/api/m02/templates/table/집계표", json={"판": "", "문서": {"열": []}}
+        ).status_code
         == 409
     )
 
@@ -34,7 +36,7 @@ def test_new_save_reopen_delete_and_stale(client):
 
     saved = client.put("/api/m02/templates/table/집계표", json={"판": v1, "문서": {"열": [1, 2]}})
     assert saved.status_code == 200 and saved.json()["판"] != v1
-    stale = client.put("/api/m02/templates/table/집계표", json={"판": v1, "문서": {}})
+    stale = client.put("/api/m02/templates/table/집계표", json={"판": v1, "문서": {"열": []}})
     assert stale.status_code == 409 and stale.json()["detail"]["stale"] == ["집계표"]
 
     rows = client.get("/api/m02/templates").json()
@@ -46,9 +48,22 @@ def test_new_save_reopen_delete_and_stale(client):
 
 def test_bad_names_and_kinds(client):
     assert (
-        client.put("/api/m02/templates/table/a..b", json={"판": "", "문서": {}}).status_code == 200
+        client.put("/api/m02/templates/table/a..b", json={"판": "", "문서": {"열": []}}).status_code
+        == 200
     )
     assert (
         client.put("/api/m02/templates/table/.숨김", json={"판": "", "문서": {}}).status_code == 422
     )
     assert client.put("/api/m02/templates/other/x", json={"판": "", "문서": {}}).status_code == 404
+
+
+def test_empty_doc_rejected_and_file_untouched(client):
+    good = {"format": 6, "entities": [{"type": "line"}]}
+    made = client.put("/api/m02/templates/drawing/도", json={"판": "", "문서": good})
+    v = made.json()["판"]
+    for bad in ({}, {"format": 6}, {"entities": "x"}, []):
+        r = client.put("/api/m02/templates/drawing/도", json={"판": v, "문서": bad})
+        assert r.status_code == 400
+    assert client.put("/api/m02/templates/table/표", json={"판": "", "문서": {}}).status_code == 400
+    assert client.get("/api/m02/templates/drawing/도").json()["문서"] == good
+    assert client.get("/api/m02/templates/table/표").status_code == 404