--- OpenbravoERP-2.50MP51/src-db/database/model/functions/MA_PRODUCTION_COST_GENERATE.xml	2014-02-10 16:47:29.212196526 -0500
+++ /opt/OpenbravoERP-2.50MP33.1/src-db/database/model/functions/MA_PRODUCTION_COST_GENERATE.xml	2014-02-25 16:05:33.473234713 -0500
@@ -87,7 +87,7 @@
                                            AND pp.m_productionplan_id = pl.m_productionplan_id
                                            AND pl.calculated='N'
                                            AND pp.ma_costcenter_version_id IS NOT NULL)
-                             ORDER BY movementdate, m_production_id) LOOP
+                             ORDER BY movementdate, documentno) LOOP
         Ma_Production_Cost(Cur_Production.M_Production_ID, p_User, v_Message);
       END LOOP;