Hi, You should check Setup time field in the routing and Lot Size field in the Item card. I think you forget setup Lot Size field. In this case system calculation based on the Lot Size 1. Let say you need to Produce 1000 pieces something and setup time is 1 hour and Process Time 1 min. If you forget assigne lot size the total time is 1000 hours + 1000 min. If you assign Lot size 1000 the total time is 1 hour + 1000 min. Valentin Gvozdev BMI Inc.