A customer's purchase order is a promise waiting to be kept. Between receiving the PO and delivering the goods, manufacturers face many chances to go wrong: an order entered with the wrong drawing revision, a delivery date promised without checking capacity, a quantity change that never reached the shop floor, a credit hold discovered on the day of dispatch. Sales order processing is the discipline that turns customer orders into accurate, achievable commitments and tracks them to delivery.
Order entry
Orders arrive by email, portal, EDI or phone, often in the customer's own format. Entering them correctly means matching the customer's part numbers to your item codes and revisions, confirming prices against quotations or price agreements, recording requested dates per line, and capturing special requirements: packaging, labelling, certificates, inspection, delivery address and terms. The customer's PO number and line references must be recorded so documents and invoices match their system.
Order review
Before accepting an order, check:
- Commercial — prices, terms, taxes and currency match what was quoted or agreed.
- Technical — specifications, drawings and revisions are correct and manufacturable.
- Capacity and material — the requested date is achievable given current load and material availability.
- Credit — the customer is within credit limits and has no overdue issues.
Repeat orders for standard items can pass quickly; new items, custom specifications and large orders need a proper review. Many quality standards also expect documented contract review.
Delivery promises
Promising dates from standard lead times — "four weeks" — ignores what is already in the plant. A realistic promise considers open load on bottleneck resources, material on hand and on order, supplier lead times for missing material and any outsourced operations. Planning software can suggest the earliest achievable date when the order is entered. When the requested date cannot be met, say so early and offer alternatives, such as partial deliveries.
Order acknowledgement
Send the customer a clear acknowledgement listing each line, confirmed quantity and date, price and any deviations from their PO. Prompt acknowledgement — within a day for standard orders — builds trust and catches misunderstandings before production starts.
From order to production and purchase
Accepted orders feed production planning and material planning. Make-to-order items create work orders; stocked items reserve inventory; missing material creates purchase suggestions. The link between the sales order line and its work orders and purchase orders should be kept, so everyone can see what is being done for which customer order.
Tracking progress
Sales and customer service need to answer "where is my order?" without walking to the shop floor. An order tracking view shows each line's status — material ready, in production, which operation, in inspection, packed, dispatched — and highlights lines at risk of missing their confirmed date. At-risk lines should be reviewed daily with planning, so customers hear about delays early, not on the due date.
Handling changes
Customers change quantities, dates and sometimes specifications. Every change should be recorded as a revision with the customer's reference, checked for impact on planning, material and price, and confirmed back to the customer. Work orders and purchase orders must be updated. Unrecorded verbal changes are a major cause of wrong deliveries.
Dispatch and invoicing
When goods are ready, dispatch documents and invoices are created from the order, referencing the customer's PO and line numbers, with the agreed certificates and labels. Partial deliveries update the open balance. Accurate referencing speeds up the customer's goods receipt and payment.
Measures
- On-time in-full against the confirmed date — the most important customer-facing measure.
- Order acknowledgement time.
- Share of orders where the requested date was accepted versus renegotiated.
- Order changes after acceptance, by customer.
- Order entry errors found later — wrong item, revision, price or address.
- Order book value and ageing of open lines.
Common mistakes
- Promising dates without checking load and material.
- Skipping review for "urgent" orders, which are often the riskiest.
- Losing track of customer revisions and verbal changes.
- Sales unable to see production status.
- Telling customers about delays only on the due date.
Example
A precision components manufacturer frequently missed promised dates despite good machine utilisation. Analysis showed that dates were promised from standard lead times, and a third of orders were changed after acceptance without updating work orders. A sales order module was introduced with capacity-based date suggestions, structured order review, revision tracking and a daily at-risk report shared between sales and planning. On-time delivery improved steadily, and customers began receiving early warnings and recovery plans instead of last-minute surprises.
Summary
Good sales order processing captures orders accurately, reviews them commercially and technically, promises dates based on real capacity and material, acknowledges quickly, links orders to production and purchasing, tracks progress, manages changes formally and measures on-time in-full delivery. It turns customer orders into commitments the whole plant can keep.
Blanket orders and schedules
Many industrial customers place a blanket order for a year and release quantities through monthly or weekly delivery schedules. Treat the blanket order as the commercial agreement — prices, terms, total quantity — and each schedule release as the delivery commitment that planning works to. Tracking cumulative quantities delivered against both the schedule and the blanket order prevents over-supply at the end of the year and shows early when a customer's actual call-offs are running well below their forecast.
Frequently asked questions
Who should review a new order before accepting it?
Usually sales or customer service for commercial terms, engineering or production planning for technical feasibility and delivery dates, and accounts for credit status. Simple repeat orders can follow a faster path.
How can we give reliable delivery dates?
Base promises on actual capacity, open load and material availability rather than standard lead times. Planning software can check these when the order is entered.
How should order changes be handled?
Record every change — quantity, date, specification — as a revision with the customer's reference, and re-check its impact on planning, material and price before confirming.
Can customers see their order status online?
Yes. A customer portal can show order lines, confirmed dates, production progress and dispatch details, reducing status calls.
What measure tells us if order processing works?
On-time in-full delivery against the confirmed date, together with order acknowledgement time and the share of orders changed after acceptance.
