The NCR is the link between quality and the rest of the business. A rejected raw material batch should block that stock from production, start a return or claim to the supplier, and leave a record that counts against the supplier's score. If the NCR lives on paper in the quality office, none of that happens automatically.
This guide covers where and how much to inspect, the NCR process step by step, and a worked example of a rejected batch from goods receipt to supplier credit. It ends with corrective action, what ISO 9001 auditors look for, and an FAQ.
Where should a factory inspect?
Inspect where a defect is cheapest to catch. A wrong raw material found at goods receipt costs a phone call to the supplier; the same problem found by a customer costs a recall.
| Inspection point | What is checked | Typical checks | What happens to stock |
|---|---|---|---|
| Incoming (goods receipt) | Raw materials, packaging, bought-in components | Certificate of analysis, dimensions, weight, labelling, visual damage, lab tests for key properties | Held in quarantine until released, then moves to available stock |
| In-process | Work in progress at set stages or intervals | Fill weight, temperature, dimensions, torque, visual checks, line clearance | Line stopped or adjusted if out of limits; affected output held |
| Final (pre-dispatch) | Finished goods, by batch or lot | Sampling against product specification, packaging and labelling, shelf-life coding | Released for sale, or held pending an NCR decision |
For each point, write an inspection plan per item or product: the characteristics to check, the method, the acceptance limits and the sample size. Keep it short enough that inspectors actually follow it.
Two controls make inspection effective rather than ceremonial.
Quarantine by default. Incoming material that needs inspection should land in a quarantine status the system will not issue to production. Release happens only when the inspection passes.
Record results, not just pass or fail. A fill weight of 498 g against a 495 g minimum passes, but a trend of falling weights warns of trouble before the first failure.
How much should you inspect?
Inspecting every unit is rarely practical, and it does not guarantee quality either: inspectors miss defects when checking thousands of identical items. Most factories use acceptance sampling for incoming and final inspection.
The standard most buyers and suppliers use is ISO 2859-1, sampling by attributes. Its current edition, ISO 2859-1:2026, was published in January 2026, replacing the 1999 edition and adding skip-lot procedures. It works in three steps:
- Choose the inspection level. General inspection level II is the usual default; level I uses smaller samples and level III larger ones.
- Find the sample size from the lot size. The table gives a code letter for the lot size and level, and the code letter gives the sample size.
- Set the acceptable quality limit (AQL). For the chosen AQL, the table gives an accept number and a reject number of defective units in the sample.
| Lot size | Code letter (level II) | Sample size |
|---|---|---|
| 151–280 | G | 32 |
| 281–500 | H | 50 |
| 501–1,200 | J | 80 |
| 1,201–3,200 | K | 125 |
| 3,201–10,000 | L | 200 |
Many companies set different AQLs by defect class: none accepted for critical defects that affect safety or legality, a tight AQL such as 1.0 for major defects, and a looser one such as 2.5 or 4.0 for minor cosmetic defects. Agree these with suppliers and customers in writing, so a rejection is never a surprise.
In-process checks are different: they usually follow a fixed frequency, such as five bottles every 30 minutes, with results plotted to spot drift.
What are the steps in a non-conformance report?
| Step | What happens | Who |
|---|---|---|
| 1. Identify | Inspector records the defect: item, batch, quantity, what failed against which limit, with photos or test results | Quality inspector |
| 2. Contain | Affected stock is placed on hold, wherever it is: receiving bay, line, warehouse, or already shipped | Quality, warehouse |
| 3. Review | Quality and the relevant department assess impact and possible causes | Quality manager with production or purchasing |
| 4. Decide (disposition) | Use as is, rework, downgrade, return to supplier, or scrap, with the reason and approval | Quality manager; higher approval for use-as-is on critical characteristics |
| 5. Act | Rework order, return and debit note, scrap entry, or customer notification | Production, purchasing, finance |
| 6. Corrective action (if needed) | Root cause found and fixed for repeat or serious problems | Owner assigned by quality |
| 7. Close | Check that disposition and any corrective action are complete | Quality manager |
The disposition is where quality touches cost, so it needs clear rules:
- Use as is only when the defect does not affect fitness for use, with written approval.
- Rework creates a work order, so the rework labour and material are costed.
- Return to supplier creates a return and a debit note, so the money comes back.
- Scrap writes the stock off with a reason code, so scrap value can be reported by cause.
An NCR that ends with "scrapped" but no stock entry leaves inventory overstated. An NCR that ends with "returned" but no debit note leaves money with the supplier.
What does an NCR look like in practice? A worked example
A juice factory in Sharjah receives 1,000 rolls of printed bottle labels at AED 85 a roll. The inspection plan for labels uses normal single sampling at general inspection level II and an AQL of 1.0 for major defects: for a lot of 1,000, inspect 80 rolls, accept with 2 or fewer defective, reject with 3 or more.
| Step | What happened |
|---|---|
| Receipt | 1,000 rolls received into quarantine against the purchase order; not available to production |
| Inspection | 80 rolls sampled. 6 have the print shifted into the area where the batch code and expiry date are printed on the line |
| Result | 6 defective is above the reject number of 3. Lot rejected, NCR-2026-117 raised with photos |
| Containment | All 1,000 rolls stay on hold. Production continues on the previous lot, which has about 12 days' stock |
| Disposition | Return to supplier. Use-as-is was rejected because an unreadable expiry date is a food labelling failure |
| Action | Return note and debit note raised: AED 85,000 plus VAT at 5% (AED 4,250), total AED 89,250 |
| Supplier follow-up | Second label rejection this quarter, so a supplier corrective action request is issued. The supplier traces the shift to press calibration and adds a print-registration check |
| Close | Replacement lot received on day 9, inspected and released. NCR closed once the debit note is confirmed and the supplier's corrective action is verified on the next two deliveries |
Three things made this work. The lot was quarantined by default, so no defective labels reached the line. The NCR created the return and debit note directly, so finance recovered the money without a separate chase. And the rejection counted against the supplier's quality score, which will matter at the next price negotiation.
When do you need corrective action, and what do ISO 9001 auditors expect?
Not every NCR needs a corrective action. A one-off damaged pallet is dealt with by disposition. A defect that repeats, affects safety or a customer, or costs significant money needs a corrective action that finds and removes the cause.
A practical corrective action record has five parts:
- Problem: what happened, linked to the NCRs that triggered it.
- Root cause: found with a simple method such as asking "why" five times, or a cause-and-effect diagram. "Operator error" is rarely the real root cause.
- Action: what will change, who owns it and by when.
- Verification: evidence that the action worked, such as no repeat across the next several lots.
- Closure: signed off by quality, with any updates to procedures, inspection plans or training.
ISO 9001:2026 was published on 16 September 2026, replacing the 2015 edition. Certified companies have until 30 September 2029 to transition. The two clauses that matter here keep their numbers:
| Clause | Requirement | What auditors usually ask for |
|---|---|---|
| 8.7 Control of nonconforming outputs | Nonconforming outputs are identified and controlled to prevent unintended use or delivery | Hold and quarantine records, disposition decisions with authority, records of concessions |
| 10.2 Nonconformity and corrective action | React to nonconformities, evaluate the need for action to remove causes, implement and review effectiveness | NCR log, root cause analysis, evidence the action worked, trend data |
The 2026 edition adds a note that customer complaints can be a source of nonconformities, so complaint records should feed the same NCR and corrective action process.
Auditors look for a closed loop. An NCR log with many open items, corrective actions without verification, or repeats of the same defect are the most common audit findings.
What does HYP see at factories?
At food, packaging, chemicals and building products manufacturers in the Gulf, our implementation team often finds a quality team with good paper procedures and a weak link to the rest of the system. Inspection results sit in binders or spreadsheets, rejected stock is held by a sign on the pallet, and the NCR is closed in the quality office while the stock is still in the system as available.
The first fix is usually to make quarantine a stock status, not a sign. Once inspected items cannot be issued until released, and once NCR decisions create the return, rework or scrap entry directly, quality records and stock records stop disagreeing. Scrap by reason code also starts to appear in cost reports, often for the first time.
In HYP, inspection plans can be set by item at goods receipt, in production and before dispatch, with quarantine stock, NCRs and dispositions linked to purchasing, production and inventory. See how it works on our Quality Management page.
Related reading: scrap and rework change the real cost of a product. See Bill of Materials and Production Costing: Finding the True Cost of a Finished Product.