E1: 31: P48013 Work Order Start Dates & Back Scheduling Calculations (Doc ID 626117.1)

EnterpriseOne Shop Floor Management back scheduling routine ensures that the materials processed to a certain operation step are out of production and available to meet the required date for completing a (work) order.

Determining the Work Order Start Date and the Start Date of the First Operation Step on the routing there are 2 separate operations that take into consideration different details / factors and cannot be performed in the same time.  The dates of the routing instructions can only be determined if the Work Order Start Date has been determined and the Work Order Header Start Date is calculated based on the Requested date of the Order.

The use of a Fixed Leadtime versus a Variable Leadtime can depend on whether there are consistent work order quantities for a manufactured item.  A significant variation is any amount that requires more or less lead time. In case the work order quantities vary significantly, the use of variable lead time is advisable.

Fixed Leadtime remains the same, regardless of the quantity produced, while Variable Leadtime adjusts according to the quantity produced.

Work order routing start date will not consider work order start date when user manually changes the work order start date in work order header program and/or when user changes the fixed level lead time for an item in item branch plant. In both scenarios work order routing start date is back scheduled based on the fixed level lead time and work order requested date.