Material Requirements Planning > Approving Planned Orders
  
Approving Planned Orders
To approve planned purchase, work, and line orders, use Planned Purchase Order Approval (23.11), Planned Work Order Approval (23.10), or Planned Repetitive Schedule Approve (23.8). Once approved, planned orders become either purchase requisitions, firm-planned work orders, or are added to production line schedules.
After a planned order is approved, MRP does not change the quantity or due date on the order the next time it is run. Instead, it generates action messages suggesting changes to the order. You can modify firm-planned order due dates and quantities as needed in Work Order Maintenance (16.1), Purchase Requisition Maintenance (5.1.4), and Line Schedule Workbench (18.1.10 or 18.22.1.10).
Approving Planned Purchase Orders
Approving a planned purchase order deletes the planned order and creates a purchase requisition, which can be filled by a purchase order.
Approving Planned Work Orders
Approving a planned work order changes its status to firm planned. MRP does not replan firm-planned orders, but generates action messages as needed. A firm-planned order has a work order bill and a routing with scheduled operations. These are not fixed. Bills are re‑exploded by MRP, while routings are re-exploded by CRP. Both are re‑exploded when the status is changed to Exploded, Allocated, or Released.
See Creating Work Orders.
Approving Planned Line Orders
Approving a planned line order adds the order amount to the schedule for that item’s production line. Orders approved for line production using Planned Repetitive Schedule Approve (23.8) are added to a schedule in a sequence according to the following hierarchy:
Due date
Primary run sequence
Secondary run sequence
Item number
The Sort Schedule by Run Sequence field controls the sequence in which orders are scheduled on a production line.
Yes: Items are sorted and sequenced by due date, primary run sequence, secondary run sequence, and item number.
No: Items are sorted and sequenced by due date and item number.
See Run Sequences.
The production schedule sequence for a given line can be viewed and modified using Line Schedule Workbench. Once a production line’s schedule is established, run Repetitive Schedule Update (18.1.18 or 18.22.1.18) to convert the line schedule to a repetitive schedule and remove the planned line orders from MRP.
See Simulating Schedules in the Workbench.