Choosing between the reordering policies in Business Central

Where to set reordering policies in Business Central

Open an Item Card and go to the Planning FastTab. The Reordering Policy field has four options and a blank. Blank means that the system never plans the item automatically. That is right for items you buy only on request. It is also a frequent cause of the complaint that the planning worksheet suggests nothing.

The policy works together with the Replenishment System field, which says whether you buy, produce or assemble the item. It also works with the lead time. If you hold stock at several sites, a stockkeeping unit can carry its own policy and quantities for each item and location. It then overrides the item card for that site.

Fixed Reorder Qty. and Maximum Qty. reordering policies in Business Central

Both of these watch a Reorder Point. When projected inventory drops to or below it, planning suggests an order. With Fixed Reorder Qty., the suggestion is always the Reorder Quantity you entered. That fits cheap, steady items that you buy in standard packs from the same supplier.

With Maximum Qty., the suggestion is whatever brings stock back up to Maximum Inventory. So the order size varies with how far stock has fallen. Both policies look at the Time Bucket, which groups demand into periods for checking the level. They suit items with even demand. They fit lumpy, project-driven items poorly.

Order and Lot-for-Lot reordering policies in Business Central

The Order policy creates one supply for each demand and links them. So a sales order line gets its own purchase or production order. Nothing is combined, and nothing is bought for stock. It suits expensive, configured or customer-specific items, where you want to trace every supply to the order behind it.

Lot-for-Lot adds up the demand inside a Lot Accumulation Period and suggests one order to cover it. It buys what you need and no more, but it still combines small demands into a sensible order. For most manufacturers and many distributors, it is the everyday choice, usually with a modest safety stock.

Order modifiers and safety settings for reordering policies in Business Central

Order modifiers then shape whatever the policy proposes. Minimum Order Quantity raises a small suggestion to the supplier's minimum. Maximum Order Quantity splits a large one into several orders. Order Multiple rounds up to full packs or pallets. They apply to every policy except Order.

Safety Stock Quantity is a level that planning tries never to go below. Safety Lead Time adds a buffer before the date you need the goods. Dampeners stop planning from suggesting changes that are too small to act on. That keeps the worksheet free of noise that buyers learn to ignore.

Putting reordering policies in Business Central to work

Policies do nothing until you run planning. Planners usually plan purchased and transferred items in the Requisition Worksheet with Calculate Plan. Companies on the Premium license that make items use the Planning Worksheet and Calculate Regenerative Plan. Each suggested line has an action message: new, change quantity, reschedule or cancel.

Start with a small group of items. Compare the suggestions with what an experienced buyer would do. Where they differ, the cause is nearly always data. Look for a wrong lead time, an old open purchase order, negative stock or a missing vendor. Fix the data before you adjust the policy. Then widen the group.

Reordering policies in Business Central: common questions

Which of the reordering policies in Business Central should most items use?

There is no single answer. A common pattern is Lot-for-Lot for items whose demand comes from orders and forecasts. Use Fixed Reorder Qty. for low-value consumables. Use Order for anything that you make or buy specifically for one customer. Decide by item category, not item by item, so the setup stays easy to explain.

Why does planning suggest nothing for an item?

Check that the Reordering Policy is not blank. Check that the item falls inside the filters and dates of the planning run. Then check that demand exists in the period. For reorder point policies, projected inventory may simply still sit above the reorder point.

Can one item have different policies per warehouse?

Yes, through stockkeeping units. Each combination of item and location can hold its own policy, quantities, lead time and replenishment system. A central warehouse might buy the item on Lot-for-Lot. A branch might get it by transfer, using a maximum quantity. So each site follows its own rhythm.

Does the policy work with a demand forecast?

Yes. Forecast quantities count as demand for the planning engine. Actual sales orders consume the forecast, so the engine does not count the same need twice. Lot-for-Lot and the reorder point policies both respond to it. That lets you build stock ahead of a season.

How is the reorder point itself decided?

Business Central does not calculate it for you in the base product. A usual starting point is expected demand during the lead time plus safety stock, taken from item history. Go through the figures with the buyers. Then revisit them when demand or suppliers change.

Related planning topics

Reordering policies in Business Central are one input to planning. The pages below cover forecasting, inventory control, purchasing and manufacturing planning. Together they decide whether you can trust the suggestions. Read them after you pick a policy for your first group of items. Our consultants can look at your item data with you, choose a policy for each category and test the suggestions against what your buyers would order by hand. For the product detail, see Design details: handling reordering policies, on Microsoft Learn.