[IMP] add quant check after all process is done

mrp_subcontracting_skip_no_negative/models/__init__.py

@@ -1 +1,2 @@
 from . import stock_move
+from . import stock_picking

mrp_subcontracting_skip_no_negative/models/stock_picking.py

@@ -0,0 +1,22 @@
+# Copyright 2023 Quartile Limited
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl)
+
+from odoo import models
+
+
+class StockPicking(models.Model):
+    _inherit = "stock.picking"
+
+    def _action_done(self):
+        res = super()._action_done()
+        self._check_negative_quants_after_process()
+        return res
+
+    def _check_negative_quants_after_process(self):
+        product_ids = self.mapped("move_ids.product_id.id")
+        quants = self.env["stock.quant"].search(
+            [
+                ("product_id", "in", product_ids),
+            ]
+        )
+        quants.check_negative_qty()