Sources of Supply

To project expected supply for an item in a business unit, the ATP function considers purchase orders, scheduled production in the firmed status, and interunit transfers that should be received between the current date and the scheduled ship date. You can specify additional sources of supply on the Setup Fulfillment-ATP Reservations page, including; scheduled production in the entered status, purchasing requisitions, manufacturing co-products or by-products, planned purchase orders, planned transfer orders, and planned production orders from PeopleSoft Supply Planning.

Purchase Orders

Open, pending, approved, and dispatched purchase orders to be put away in the inventory business unit are included as standard sources of supply in the ATP calculation. The due date on the purchase order schedule line is used as the date when the items are available. Subcontract purchase orders for production IDs are excluded; this supply is captured as part of scheduled production.

Any quantity already received for a schedule line on a purchase order is subtracted from the original requested quantity. Quantity received but not put away is counted as supply with an availability date equal to the current date. Similarly, receipts without purchase orders that have not completed the putaway process are treated as supply with an availability date equal to the current date.

Scheduled Production

Firmed, released, and in-process scheduled production orders are included as standard sources of supply in the ATP calculation. To be counted as supply, an item must be the primary output for the production order or a component on a tear down order. The production order's due date is used as the item availability date unless the item is produced during an earlier operation sequence; in that case, the operation's due date is used as the item availability date.

Quantity yet to be completed is calculated based on the expected output of the production run minus the already completed output quantity for the run. Completed output quantity that has not been putaway is counted as supply with an availability date equal to the current date.

In addition, you can select to include production orders in the Entered status in the supply side of the ATP calculation by selecting the option on the Setup Fulfillment-ATP Reservations page.

Interunit Transfers

Stock transfers to be received from other business units are included as a standard source of supply in the ATP calculation. The scheduled arrival date for the interunit transfer is used as the item availability date. Quantity received but not put away is counted as a supply with an availability date equal to the current date.

Requisitions

Approved requisitions can be included as an optional source of supply in the ATP calculation. Only approved requisitions that specify an Inventory business unit and a due date are counted. The due date on the requisition is used as the item availability date. Any quantity on a requisition that has been sourced to a purchase order or interunit transfer is subtracted from the requisition quantity.

Co-Products and By-Products

Both co-products and by-products can be included as optional sources of supply in the ATP calculation. To be counted as supply, the item must be listed as co-product or by-product on the production order. Waste by-products are not counted as supply. The production order's due date is used as the item availability date unless the item is produced during an earlier operation sequence; in that case, the operation's due date is used as the item availability date.

Co- or by-product quantities yet to be completed are calculated based on the expected output of the production run minus the already completed output quantity for the run. Completed output quantities of co- or by-products that have not been put away are counted as supply with an availability date equal to the current date.

Planned Supply

Planned purchase orders, planned interunit transfer orders, and planned production orders from PeopleSoft Supply Planning can be used as sources of supply. When selecting these options on the Setup Fulfillment-ATP Reservations page, you will define which planned POs, planned transfers, and planned production should be included based on whether or not the order is approved, the status of the order (planned, firm planned, or both), and if the order is frozen or not.