diff --git a/sf_demand_plan/models/sf_production_demand_plan.py b/sf_demand_plan/models/sf_production_demand_plan.py
index de902573..d484fb8e 100644
--- a/sf_demand_plan/models/sf_production_demand_plan.py
+++ b/sf_demand_plan/models/sf_production_demand_plan.py
@@ -363,10 +363,9 @@ class SfProductionDemandPlan(models.Model):
                         )
                         if total_purchase_quantity < record.product_uom_qty:
                             pr_ids = self.env['purchase.request'].sudo().search(
-                                [('origin', 'like', mrp_production[0].name), ('state', '!=', 'done')])
+                                [('line_ids.product_id', 'in', raw_materials.ids), ('state', '!=', 'done')])
                             outsourcing_purchase_request.extend(pr_ids.ids)
             elif record.supply_method in ('purchase', 'outsourcing'):
-                pr_ids = None
                 purchase_orders = self.env['purchase.order'].sudo().search([
                     ('state', 'in', ('purchase', 'done')),
                     ('order_line.product_id', '=', record.product_id.id)