GL bug

modules/account/account.py

@@ -3080,8 +3080,26 @@ class GeneralLedgerDetail(DescriptionOriginMixin, ModelSQL, ModelView):
         payments = Payment.search([('line', '=', self.move_line.id)], limit=1)
         return payments[0] if payments else None
 
+    @staticmethod
+    def _resolve_reference(value):
+        if not value or hasattr(value, '__name__'):
+            return value
+        if not isinstance(value, str):
+            return None
+        try:
+            model_name, record_id = value.split(',', 1)
+            record_id = int(record_id)
+        except ValueError:
+            return None
+        try:
+            Model = Pool().get(model_name)
+        except KeyError:
+            return None
+        return Model(record_id)
+
     def get_document_field(self, name):
-        origin = self.move.origin if self.move else None
+        origin = self._resolve_reference(
+            self.origin or (self.move.origin if self.move else None))
         if origin:
             model_name = origin.__name__
             if model_name == 'account.invoice':