Production Planning: Turning Sales Orders into a Workable Schedule

Production planning is where sales promises meet physical reality. Done well, it is quiet — batches start when they can finish, and delivery dates hold. Done informally, it produces the familiar week: three jobs half-done, one waiting for material, and a supervisor on the phone to purchasing.

The difference is usually not skill. It is whether the plan is a calculation or a negotiation.

Start from confirmed demand, not from optimism

The plan should trace back to real orders. When a work order is created from a confirmed sales order, three useful things become true at once:

• Every batch has a customer and a date attached to it
• You can answer "which order is this for?" instantly
• Capacity is spent on committed demand rather than speculation

Where you deliberately build to stock, that should be an explicit decision with its own work order — not the default because nobody linked the two.

Explode the BOM before you commit the floor

Once quantity is known, material requirement is arithmetic, not judgement: the bill of materials multiplied out for the batch size, including expected wastage.

This is the step most often done in someone's head, and it is where planning quietly goes wrong — because a mental calculation cannot check itself against stock.

Check availability, then reserve

Two separate actions, and both matter.

Checking compares the requirement against live stock and tells you what is short. Reserving commits the available material to this work order so another job cannot consume it while you are still preparing.

Skipping reservation is the classic cause of the half-finished batch: the material was there when you checked on Monday, and gone when the floor asked for it on Wednesday. In FlexgrewERP production, a work order can reserve material and release it again if plans change.

Deal with shortfalls immediately

The check will find gaps. What matters is what happens in the next five minutes.

The productive pattern is to convert the shortfall directly into a purchase requisition from the work order itself — so procurement's clock starts now, with the exact quantities and the job it is for. The alternative, a note to follow up later, is how a two-day gap becomes a two-week delay.

Sequence with capacity in mind

A material-feasible plan can still be a capacity fantasy. Before releasing, look at what the floor is already carrying:

• Which machines are running what, and what is queued behind them
• Which jobs are due soonest
• Which changeovers can be grouped to avoid repeated setup

A machine allocation view makes this a two-minute check rather than a walk around the plant. Sequencing similar jobs together is often the single largest capacity gain available without buying anything.

Release, then track at process level

Once released, the batch needs to report on itself. Recording output at each process step gives you live work-in-progress: what stage each batch has reached, and how much remains.

That is what turns "it's running" into an answer you can give a customer.

Plan on a rhythm

Planning collapses when it becomes continuous firefighting. A workable rhythm for most small and mid-sized manufacturers:

The daily review is the one that pays for itself fastest — most delays are visible a day before they hurt, if anyone is looking.

The test of a good plan

You should be able to answer, without a phone call: what is running, what is next, what is short, and which customer is affected if it slips?

If those four answers require walking the floor, the plan is living in people's heads. See what a connected plan looks like — book a demo with one of your own products.