diff --git a/backend/app/schemas/nspd_bulk.py b/backend/app/schemas/nspd_bulk.py
index 9a463c34..27751fdf 100644
--- a/backend/app/schemas/nspd_bulk.py
+++ b/backend/app/schemas/nspd_bulk.py
@@ -73,10 +73,22 @@ class NSPDBulkFeature(BaseModel):
 
         NSPD response shape: `properties.category` (НЕ `categoryId`).
         Field name был неверно interpretirovan в initial PR2 implementation
-        based on HAR audit, тратили на debug проверял nspd_lite headers.
+        based on HAR audit; в #177 поправили оба пути.
+
+        Использует `is not None` (НЕ `or`) — иначе `category=0` truthy-trapped
+        бы skipped (хотя observed NSPD IDs все positive, paranoia не вредна).
+        int() wrapped в try/except — если NSPD когда-то вернёт string ID
+        ("ЗУ"), мы не падаем посреди upsert_features loop.
         """
-        val = self.properties.get("category") or self.properties.get("categoryId")
-        return int(val) if val is not None else None
+        val = self.properties.get("category")
+        if val is None:
+            val = self.properties.get("categoryId")
+        if val is None:
+            return None
+        try:
+            return int(val)
+        except (TypeError, ValueError):
+            return None
 
     @property
     def options(self) -> NSPDOptions:
diff --git a/backend/tests/scrapers/test_nspd_bulk_client.py b/backend/tests/scrapers/test_nspd_bulk_client.py
index fe7a4ddb..48e482fb 100644
--- a/backend/tests/scrapers/test_nspd_bulk_client.py
+++ b/backend/tests/scrapers/test_nspd_bulk_client.py
@@ -29,7 +29,12 @@ from app.scrapers.nspd_bulk_client import (
 
 @pytest.fixture
 def sample_quarter_response() -> dict[str, Any]:
-    """Минимальный валидный ответ search_by_quarter из NSPD."""
+    """Минимальный валидный ответ search_by_quarter из NSPD.
+
+    Real NSPD shape (verified live on 66:41:0303161 in #177):
+    - `properties.category` (НЕ categoryId)
+    - `meta` лежит на top-level (не в data.meta)
+    """
     return {
         "data": {
             "type": "FeatureCollection",
@@ -50,7 +55,7 @@ def sample_quarter_response() -> dict[str, Any]:
                         ],
                     },
                     "properties": {
-                        "categoryId": 36368,
+                        "category": 36368,
                         "categoryName": "Земельные участки ЕГРН",
                         "options": {
                             "cad_num": "66:41:0303161:123",
@@ -63,7 +68,7 @@ def sample_quarter_response() -> dict[str, Any]:
                     "type": "Feature",
                     "geometry": {"type": "Point", "coordinates": [6700500.0, 7700500.0]},
                     "properties": {
-                        "categoryId": 36369,
+                        "category": 36369,
                         "categoryName": "Здания",
                         "options": {
                             "cad_num": "66:41:0303161:456:1",
@@ -72,14 +77,15 @@ def sample_quarter_response() -> dict[str, Any]:
                     },
                 },
             ],
-            "meta": [
-                {"categoryId": 36368, "totalCount": 170},
-                {"categoryId": 36369, "totalCount": 256},
-                {"categoryId": 36383, "totalCount": 75},
-                {"categoryId": 37163, "totalCount": 5877},
-                {"categoryId": 39663, "totalCount": 1},
-            ],
-        }
+        },
+        # meta — top-level, primary path в search_by_quarter
+        "meta": [
+            {"categoryId": 36368, "totalCount": 170},
+            {"categoryId": 36369, "totalCount": 256},
+            {"categoryId": 36383, "totalCount": 75},
+            {"categoryId": 37163, "totalCount": 5877},
+            {"categoryId": 39663, "totalCount": 1},
+        ],
     }
 
 
@@ -105,7 +111,7 @@ def sample_wms_response() -> dict[str, Any]:
                     ],
                 },
                 "properties": {
-                    "categoryId": 36368,
+                    "category": 36368,
                     "options": {"cad_num": "66:41:0303161:789"},
                 },
             }
@@ -137,13 +143,13 @@ def sample_tab_group_response() -> dict[str, Any]:
 
 
 def test_nspd_bulk_feature_parse_basic() -> None:
-    """NSPDBulkFeature парсит id, geometry, properties."""
+    """NSPDBulkFeature парсит id, geometry, properties (primary path: properties.category)."""
     raw = {
         "id": 42,
         "type": "Feature",
         "geometry": {"type": "Point", "coordinates": [6700000.0, 7700000.0]},
         "properties": {
-            "categoryId": 36368,
+            "category": 36368,
             "options": {"cad_num": "66:41:0303161:1", "area": 300.0},
         },
     }
diff --git a/backend/tests/services/test_cadastre_bulk.py b/backend/tests/services/test_cadastre_bulk.py
index fc0a7300..9cd3ddf7 100644
--- a/backend/tests/services/test_cadastre_bulk.py
+++ b/backend/tests/services/test_cadastre_bulk.py
@@ -42,7 +42,7 @@ def _make_parcel_feature(cad_num: str = "66:41:0303161:1") -> NSPDBulkFeature:
                 ],
             },
             "properties": {
-                "categoryId": 36368,
+                "category": 36368,
                 "options": {
                     "cad_num": cad_num,
                     "quarter_cad_number": "66:41:0303161",
@@ -76,7 +76,7 @@ def _make_building_feature(cad_num: str = "66:41:0303161:1:1") -> NSPDBulkFeatur
                 ],
             },
             "properties": {
-                "categoryId": 36369,
+                "category": 36369,
                 "options": {
                     "cad_num": cad_num,
                     "quarter_cad_number": "66:41:0303161",
@@ -112,7 +112,7 @@ def _make_zouit_feature(reg_numb: str = "66-0.1-1.1-1234") -> NSPDBulkFeature:
                 ],
             },
             "properties": {
-                "categoryId": 36940,
+                "category": 36940,
                 "categoryName": "ЗОУИТ",
                 "options": {
                     "reg_numb_border": reg_numb,
@@ -237,7 +237,7 @@ def test_upsert_features_unknown_category_counts_as_skipped() -> None:
         {
             "type": "Feature",
             "geometry": None,
-            "properties": {"categoryId": 99999, "options": {}},
+            "properties": {"category": 99999, "options": {}},
         }
     )
     db = MagicMock()
@@ -251,7 +251,7 @@ def test_upsert_features_quarter_stats_not_counted() -> None:
         {
             "type": "Feature",
             "geometry": None,
-            "properties": {"categoryId": 36381, "options": {"cnt_land": 5}},
+            "properties": {"category": 36381, "options": {"cnt_land": 5}},
         }
     )
     db = MagicMock()
@@ -458,7 +458,7 @@ def test_zouit_dedup_different_category_ids() -> None:
             "type": "Feature",
             "geometry": None,
             "properties": {
-                "categoryId": 36940,
+                "category": 36940,
                 "categoryName": "ЗОУИТ 1",
                 "options": {"reg_numb_border": "66-0.1-1.1-1234", "type_zone": "тип А"},
             },
@@ -469,7 +469,7 @@ def test_zouit_dedup_different_category_ids() -> None:
             "type": "Feature",
             "geometry": None,
             "properties": {
-                "categoryId": 469039,
+                "category": 469039,
                 "categoryName": "ЗОУИТ 2",
                 "options": {"reg_numb_border": "66-0.1-1.1-1234", "type_zone": "тип Б"},
             },