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Independent IFS Cloud practice · Inventory
Stock you cannot trace back to a batch
The part is set up for lot tracking, so every unit is supposed to carry a batch number that ties it back to when and how it was made or received. Some of it is on hand with no lot number at all. Depending on your setup, that stock can pick, ship, and count like any other in day-to-day handling. When a supplier reports a bad batch, or an auditor asks you to trace a shipment, the one field that answers the question is blank.
Key takeaways
- A part set up for lot or batch tracking can still hold on-hand stock with no lot number attached, so the traceability the setting promises is missing for that quantity.
- The gap does not show in day-to-day handling. It shows during a recall, a customer complaint, or a quality audit, when someone needs the batch history.
- The goods are on hand and usable; the missing piece is the batch identity in the data. A recall scoped by batch number cannot match a unit whose lot field is blank.
- Stock can land without a lot number through a manual adjustment, tracking switched on later for a part that already had stock, or a migration or interface load.
- On-hand balances, the part’s tracking setting, and the lot field are recorded in IFS Cloud (worth confirming the exact projections in your environment), so a read-only monitor can list the lot-tracked parts that hold stock with no batch number.
1.Traceability is only real when every unit carries its batch
Turning on lot tracking for a part is a promise: every quantity on hand can be traced to a specific batch, and from that batch to a supplier receipt or a production order. That link answers two questions: where this unit came from, and where the rest of its batch went. A quantity on hand with no lot number cannot answer either.
A blank lot costs nothing until someone needs the batch. A supplier recalls a batch and you cannot say how much of it you still hold or shipped. A customer reports a defect and you cannot trace it back to a source. An auditor asks for the genealogy of a tracked part and the record has a hole in it.
The part looks controlled because the tracking setting is on and the quantities that carry lot numbers are complete. The untracked quantity sits in the same balance as everything else. Whether a pick or a count objects to a missing lot depends on your setup; where nothing does, the gap stays until a recall or an audit asks for the batch.
2.How tracked stock ends up with no batch number
A lot number goes missing where stock enters or changes outside the standard receiving path. Three routes are worth checking in your setup.
| Origin | What happens | Why it survives |
|---|---|---|
| Manual adjustment or count-in | Stock is added by an adjustment or a count correction without a lot number entered | The balance is right, so the total looks correct and the blank lot is not noticed |
| Tracking turned on later | Lot tracking is enabled on a part that already had stock, and the existing quantity has no batch behind it | The change looks like a setup improvement, and the legacy stock keeps moving as before |
| Migration or interface | Opening balances or an integration load stock without carrying a lot number into IFS | The load reconciles on quantity, and lot completeness is not part of the check |
In each case the quantity is real and usable. Where your setup does not stop it, it can be picked, shipped, or blended with tracked stock before anyone needs the batch, and each of those moves makes the hole harder to close.
3.Detecting the tracked stock with no batch
On-hand balances, the lot-tracking setting of a part, and the lot number on each quantity are recorded in IFS Cloud and can be read through OData projections without touching a record (the exact projections are worth confirming in your environment). Detection runs on a schedule, with the first scan after the rule is switched on, and compares what the part promises against what its stock carries:
- Lot-tracked parts with on-hand stock and no lot number - the part is set for batch tracking, yet a quantity on hand has the lot field empty.
- Blank-lot stock that is available to pick - the untracked quantity is in a pickable location and can ship with the gap still in it.
- Parts where blank-lot stock is a share of the balance - ranked so a part with a large untracked share is treated ahead of one with a single stray unit.
Because this is a read-only monitoring pattern, it runs beside the warehouse and writes nothing back to IFS. It does not assign a lot, adjust a balance, or block a pick, and it should not: attaching a batch to existing stock is a controlled correction with quality consequences. It adds no object inside the client system, so a release update leaves nothing of ours in your IFS to retest. Before each release I check that the standard projections it reads still match, as part of the subscription. The warehouse and quality team get the list of tracked parts holding stock with no batch, so the traceability the setting promises can be restored before a recall or an audit asks for it.
4.Rolling it out without noise
- Rank by untracked share - weight each part by how much of its balance has no lot number, so a part with a large untracked share outranks one stray unit.
- Lead with pickable stock - blank-lot quantity in a shippable location can leave before it is fixed, so list it first.
- Start where traceability is regulated - focus first on parts where a recall or audit is a real risk, such as food, pharmaceuticals, or medical devices.
- Dry-run first - in the first week the rule only logs what it would have listed, and nothing reaches the warehouse team.
- Read-only by design - standard OData reads only, no lot assigned or balance changed back in IFS and no new object installed in the client system.
Related reading
5.Frequently asked questions
If the quantity is correct, why does a missing lot matter?
A tracked part promises two things: the right quantity and the ability to trace each unit to a batch. A recall, a complaint, or an audit relies on the second. Stock with a correct quantity and no lot number looks right on the balance, and it cannot supply its batch history when someone asks for it.
Can stock with no lot number be traced in a recall?
A recall is scoped by batch number, so a unit whose lot field is blank has no batch to match against. The quantity can only be traced through other records, such as the receipt or the adjustment that created it, and assigning the right batch afterwards is a decision for the warehouse and quality team.
Should the monitor assign a lot number to fix it?
No. Attaching a batch to stock that has none is a decision about what that batch really is, with consequences for quality and traceability, so it belongs to a person. The monitor reads the tracking setting and the lot field through OData and lists the stock that is missing a batch, then leaves the correction to the warehouse and quality team. Nothing is written back to IFS.
Will the monitor list parts that are not lot tracked?
No. A part without lot tracking is not expected to have a lot number, so it is not an exception. The monitor only looks at parts whose own setting says they carry a batch, then lists the on-hand stock where that batch is missing. A human still decides whether each listed quantity is a real gap, because the monitor cannot know which batch the stock belongs to.
6.About the author
Dariusz Myśliwiec brings 18 years hands-on with IFS (Apps 7.5–10 and IFS Cloud). IFS Certified Associate Consultant. PRINCE2® 7. Based in Kraków, delivering remotely across Europe and globally as an independent practice, so you talk to the consultant who builds it.
Selected clients: Fugro · LGC · BVI Medical · Betafence (PRÆSIDIAD) · Barlinek · NGK Ceramics · Newag · Oleofarm.
IFS is a registered trademark of IFS AB; this practice is not affiliated with IFS AB.
Find the tracked stock that lost its batch
Tell me which of your parts are lot or batch tracked and how stock is received and adjusted. On a 30-minute fit call we check whether a rule that lists tracked parts holding stock with no batch number fits your data. The SCM Automation Pack runs three rules today (unconfirmed purchase orders, late deliveries, stock below minimum), so this would be an additional rule built to order, with a dry-run week before anything reaches your warehouse team.
