You can delete work orders using Work Order Maintenance under two conditions:
• They have a status of P (Planned), B (Batch Input Firm Planned), or F (Firm Planned) with a WIP total of zero.
• They have a status of C (Closed), a WIP total of zero, and a valid accounting close record.
Obsolete work orders can also be deleted and/or archived with Work Order Delete/Archive (16.23). Only orders closed with Work Order Accounting Close can be deleted.