What Is Firming in Production Planning?

Firming is the planner's act of converting a suggested build quantity into a real manufacturing order the plant will schedule and build. Before firming, the number on the screen is advice that recalculates every run and commits nobody. After firming, an order exists with a quantity, a due date, and a start date, and the plan counts on it as supply.

This entry defines firming and shows how it reads inside EDGEBIC by User Solutions. For the wider index of terms, see the manufacturing glossary; for the advice it acts on, see what is a replenishment suggestion; and for the committed build plan it belongs to, see EDGEBIC master production schedule explained.

How It Works

Planning produces two kinds of number, and the distinction between them is the whole reason firming exists.

The first kind is calculated advice. When a projected balance falls below its reorder trigger, a suggestion appears in that bucket saying how much to build. It is recomputed from scratch on every projection run, it is not counted as future supply, and it reserves nothing. Change a forecast and the suggestion changes with it. Nothing has been promised.

The second kind is a commitment. Firming takes the suggested quantity, or a quantity a planner has committed in a master-schedule bucket, and writes a manufacturing order. That order has a quantity, a due date, a start date, and a status that marks it as scheduled work waiting to be placed. It is a real record that survives the next projection run.

Three details make the commitment behave properly. The quantity is rounded up to whole units, because you cannot build a fraction of a part. The order is marked as building into inventory, which tells the engine its output goes onto the shelf rather than satisfying one named customer. And the order is stamped with the origin it came from, so you can still tell later which orders arose from replenishment and which from the master schedule.

Firming does not schedule. It creates the commitment; the next scheduler run places it on the calendar against real capacity.

A Concrete Example

A planner is reviewing a stocked part. Three weeks out, the projected balance dips below the reorder trigger and a suggestion appears in that bucket: build 300.

While it is only a suggestion, nothing has happened. The bucket shows the shortfall and the advice, and if next week's forecast is revised down, the suggestion will simply not reappear. No order exists, no capacity is touched.

The planner judges the demand real and firms the bucket. An order for 300 is created, due in that bucket, building to inventory, with a start date derived from the due date. Its status is scheduled, so it is now waiting for the next scheduler run.

The projection is reloaded. The new order now shows as a scheduled receipt in the bucket where it completes, so the projected balance sits back above the trigger and the suggestion is gone. That disappearance confirms the firm took effect.

Two days later a colleague, not knowing, clicks firm on the same master-schedule bucket. Because that bucket is already released and its order still exists, the second call returns the existing order instead of creating a second one.

How EDGEBIC Uses It

In EDGEBIC, firming is available from two surfaces that share the same shape. From the inventory calendar, firming a suggested quantity creates a replenishment order for that product, quantity, and bucket date. From the master production schedule, firming a bucket creates a build-to-stock order and marks the bucket as released, linking it to the order it produced.

Both paths write one manufacturing order, marked as building to inventory, with the quantity rounded up to whole units and a status of scheduled. Both stamp the order with its origin, so replenishment orders and master-schedule orders remain distinguishable in any later query or report. The master-schedule path additionally offsets the start date by the product's end-item lead time, so the build finishes early enough for the delivery-ready tail to land on the due date.

The master-schedule firm is also atomic and idempotent. The order creation and the bucket stamp happen in one transaction, so a failure leaves neither behind, and firming an already-released bucket whose order is still alive returns that same order rather than a duplicate. If the order was deleted out of band, the stale link is replaced and a new order is created, which is the sensible recovery.

Once firmed, the order behaves like any other job: it waits for the next scheduler run, consumes real capacity when placed, and posts a receipt into the ledger when it completes.

For the plan the firmed order feeds, see projected available balance. For the bucket state that firming advances, see what is an MPS entry status, and for the tag it leaves behind, see what is a demand source in production planning.