diff --git a/modules/purchase_trade/tests/test_module.py b/modules/purchase_trade/tests/test_module.py
index ca9d190..9f5ff18 100644
--- a/modules/purchase_trade/tests/test_module.py
+++ b/modules/purchase_trade/tests/test_module.py
@@ -810,6 +810,66 @@ class PurchaseTradeTestCase(ModuleTestCase):
         with self.assertRaises(UserError):
             report.validate_remote_weight_report_context(shipment)
 
+    def test_weight_report_create_from_json_accepts_missing_weight_date(self):
+        'weight report import keeps working when OCR returns null for weight_date'
+        WeightReport = Pool().get('weight.report')
+        party_model = Mock()
+        vessel_model = Mock()
+        location_model = Mock()
+        party_model.getPartyByName.side_effect = lambda name: Mock(id={
+            'SELLER': 1,
+            'BUYER': 2,
+            'CARRIER': 3,
+        }[name])
+        vessel_model.search.return_value = []
+        location_model.search.return_value = []
+
+        payload = {
+            'lab': 'LAB',
+            'report': {
+                'reference': 'REF',
+                'file_no': 'FILE',
+                'date': '28 October 2025',
+            },
+            'contract': {},
+            'parties': {
+                'seller': 'SELLER',
+                'buyer': 'BUYER',
+                'carrier': 'CARRIER',
+            },
+            'shipment': {
+                'bl_no': 'BL-1',
+                'weighing_place': 'PORT',
+                'weighing_method': 'METHOD',
+                'bales': 10,
+            },
+            'weights': {
+                'weight_date': None,
+                'gross_landed_kg': '10',
+                'tare_kg': '1',
+                'net_landed_kg': '9',
+                'invoice_net_kg': '9',
+                'gain_loss_kg': '0',
+                'gain_loss_percent': '0',
+            }
+        }
+
+        with patch(
+                'trytond.modules.purchase_trade.weight_report.Pool') as PoolMock, patch.object(
+                WeightReport, 'create', return_value=[payload]) as create_mock:
+            PoolMock.return_value.get.side_effect = lambda name: {
+                'party.party': party_model,
+                'trade.vessel': vessel_model,
+                'stock.location': location_model,
+            }[name]
+
+            created = WeightReport.create_from_json(payload)
+
+        self.assertEqual(created, payload)
+        values = create_mock.call_args.args[0][0]
+        self.assertIsNone(values['weight_date'])
+        self.assertEqual(values['report_date'].isoformat(), '2025-10-28')
+
     def test_invoice_report_uses_invoice_template_from_configuration(self):
         'invoice report path is resolved from purchase_trade configuration'
         report_class = Pool().get('account.invoice', type='report')
diff --git a/modules/purchase_trade/weight_report.py b/modules/purchase_trade/weight_report.py
index 2974339..62ccede 100644
--- a/modules/purchase_trade/weight_report.py
+++ b/modules/purchase_trade/weight_report.py
@@ -206,6 +206,12 @@ class WeightReport(ModelSQL, ModelView):
         
         def parse_date(date_str):
             logger.info("TRY_TO_PARSE:%s",date_str)
+            if not date_str:
+                return None
+            if isinstance(date_str, datetime.date):
+                return date_str
+            if not isinstance(date_str, str):
+                date_str = str(date_str)
             for fmt in ('%d %B %Y', '%d %b %Y'):
                 try:
                     return dt.strptime(date_str, fmt).date()