Planning Time Fence in Oracle Advance Supply Chain Planning (ASCP)

Planning time fence is used to stabilize production on the shopfloor and procurement in sourcing.

ASCP Plan runs will create planned orders outside of the planning time fence. In the short term if an order was placed within the planning time fence it would adversely impact component schedules, capacity plans and other orders. Effective usage of planning time fence can minimize the churn of order changes.

Operations and orders (planned orders, work orders, purchase orders, transfer orders) with start dates within the planning time fence will not be permitted to be rescheduled or cancelled. Operations and orders with start dates beyond the planning time fence will not be permitted to be rescheduled inside the planning time fence.

The profile option, MSO: Firm Operations/Orders Within Time Fence, controls whether operations and orders that fall within the planning time fence are automatically firmed or not.

Plan Options in ASCP

The following two plan options will play role in plan output along with planning timefence

1. Overwrite
2. Append planned Orders

 

Check the planning time fence option to turn on planning time fence.

The plan output will also depend on the Overwrite and Append Planned Orders options

The overwrite option can be to Overwrite None, All or Outside planning time fence

 

In this below examples to demonstrate how PTF works, we will use unconstrained plan. Also the leadtime’s are made 0 to simplify. Consider single item demand with PTF set to 8 days.

Items	SK_DTF0
Plan  Date	15-Oct-08
PTF	8
PTF Date	24-Oct-08

Demand Schedule

Demand Date	Demand Quantity
21-Oct-08	10
22-Oct-08	10
23-Oct-08	10
24-Oct-08	10
27-Oct-08	10
28-Oct-08	10
29-Oct-08	10
30-Oct-08	10
31-Oct-08	10

Plan Run1:

Plan run with Planning time fence unchecked (turned off)

All the planned orders are aligned with demand dates

Plan Run2:

Plan run with Planning time fence checked (turned ON)

The planned orders are only suggested beyond the PTF. While the demands are from 10/21 – the planned orders are pushed to 10/24.

Now firm some of the planned orders.

The firmed Planned Orders are highlighted as below

Also consider changes in demand dates as below

 

Forecast Date	Old Demand	New Demand
21-Oct-08	10	4
22-Oct-08	10	13
23-Oct-08	10	0
24-Oct-08	10	14
27-Oct-08	10	5
28-Oct-08	10	16
29-Oct-08	10	10
30-Oct-08	10	2
31-Oct-08	10	0

Plan Run4:

Set the following options for the next plan run

PTF	Checked
Overwrite	NONE
Append Planned  Order	Unchecked

The plan output after the plan run is as follows

In this case, the planning process does not overwrite existing firm planned entries, but deletes any suggested planned orders. In addition, it does not suggest additional demand to the end of the plan.

Demand	64
Supplies	40

Planning with these options could lead to shortage of supply as we are restricting plan from appending planned orders

Plan Run5:

Set the following options for the next plan run

PTF	Checked
Overwrite	NONE
Append Planned  Order	Checked

The plan output after the plan run is as follows

The planning process does not overwrite existing firm planned orders, but deletes any suggested planned orders. The planning process then creates (appends) new planned orders at the end of the planning horizon

Demand	64
Supplies	64

Planning with these options could lead to delays of supply

Plan Run6:

Set the following options for the next plan run

PTF	Checked
Overwrite	Outside PTF
Append Planned  Order	Checked

The plan output after the plan run is as follows

Deletes planned and firm planned orders outside the planning time fence and deleting all planned entries inside the planning time fence for each item. The planning process creates (appends) new planned orders after the planning time fence date.

Demand	64
Supplies	64

Plan Run7:

Set the following options for the next plan run

PTF	Checked
Overwrite	All
Append Planned  Order	Checked

The plan output after the plan run is as follows

In this case the plan deletes all previous planned and firm planned entries and generates new planned orders to satisfy all the demands.

Demand	64
Supplies	64

Choosing the right option would lead to successful planning, balancing the Demand and Supply and minimizing the churn within the existing orders.

--- Sasi Marisa ---