diff --git a/issue10467.diff b/issue10467.diff
new file mode 100644
index 0000000..249aa91
--- /dev/null
+++ b/issue10467.diff
@@ -0,0 +1,24 @@
+diff -r 8a6a82c717d6 stock.py
+--- a/trytond/trytond/modules/stock_lot/stock.py	Tue Jul 10 12:57:12 2018 +0200
++++ b/trytond/trytond/modules/stock_lot/stock.py	Tue Jul 10 12:58:45 2018 +0200
+@@ -159,6 +159,20 @@
+                 'lot_required': 'Lot is required for move of product "%s".',
+                 })
+ 
++    @classmethod
++    def assign_try(cls, moves, with_childs=True, grouping=('product',)):
++        lot_moves = []
++        product_moves = []
++        for move in moves:
++            if move.lot:
++                lot_moves.append(move)
++            else:
++                product_moves.append(move)
++        return (super(Move, cls).assign_try(lot_moves,
++                with_childs=with_childs, grouping=('product', 'lot'))
++            & super(Move, cls).assign_try(product_moves,         
++                with_childs=with_childs, grouping=grouping))
++
+     def check_lot(self):
+         "Check if lot is required"
+         if (self.state == 'done'
diff --git a/series b/series
index 508ab01..2d789bf 100644
--- a/series
+++ b/series
@@ -16,3 +16,4 @@ search_warehouse.diff #[stock] search function for warehouse.
 stock_consignment_create_invoice_lines_on_move_done.diff # [stock_consignment] Task #034628: stock_consignment only create invoice lines on move done
 
 issue240_631.diff # [stock_lot] stock_by_locations get all locations with that lot.
+issue10467.diff # stock_lot: add lot to grouping if lot it's required on product