Data Sequencing

Data sequencing is important when generating the work orders for configured items. Data sequencing must be set in descending order, which creates the configured work orders in the proper order: from the bottom up. This process ensures that the generated work orders have accurate standard costs and accurate back-scheduled dates.

During order entry, the system generates the associated work order headers for configured items with a work order line type. The actual work order number is assigned from the top level down, as illustrated by this table:

Order Number	Item Number	Item Description	Work Order Number
3726	6000	Forklift	67890
3726	6100	Boom	67891
3726	6200	Fork	67892

During order entry, a requested date is entered for the configured item. The system uses the requested date on the order and lead-time information from the Leadtime Level field on the Additional System Information form in the Item Master (P4101) to back-schedule the work order headers that are generated during order entry.

When you run the Order Processing program, the work order headers are used to generate the work orders; no update to the work order header exists. Order processing back-schedules the start and end dates of each routing operation on the work orders, based on the dates in the work order headers. Thus, Order Processing calculates lead times for multilevel configured items. However, Leadtime Rollup does not support configured items.

You can generate work orders without setting the data sequencing to descending order, and the work orders are then created correctly with the associated parts lists and routing. However, standard costing and back scheduling of the routing operations are not generated correctly.