diff --git a/ProductionMgr/Tnb.ProductionMgr/PrdMoTaskService.cs b/ProductionMgr/Tnb.ProductionMgr/PrdMoTaskService.cs
index 0d7c6306..1f10d7be 100644
--- a/ProductionMgr/Tnb.ProductionMgr/PrdMoTaskService.cs
+++ b/ProductionMgr/Tnb.ProductionMgr/PrdMoTaskService.cs
@@ -1609,7 +1609,7 @@ namespace Tnb.ProductionMgr
                                 //if (parent.is_hand_set_batch == 1)
                                 //    batch = parent.batch;
 
-                                batch= parent.batch;
+                                batch = string.IsNullOrEmpty(parent.batch) ? batch : parent.batch;
                                 BasMaterial basMaterial = await _db.Queryable<BasMaterial>().SingleAsync(x=>x.id==parent.material_id);
                                 BasMbom basMbom = await _db.Queryable<BasMbom>().SingleAsync(x => x.id == item.bom_id);