Two product classes, two different questions
| Topic | Stock tracking software | WMS |
|---|---|---|
| Core question | How much of each product do we have? | Which location holds it, who picks it, in what order? |
| Location detail | At warehouse level. | Addressed down to aisle, bin and pallet. |
| Who directs the work | A person, from a printout or screen. | The system: it creates tasks, sequences them and assigns them. |
| Floor device | Usually none, or only for counting. | Step-by-step direction on a handheld or tablet. |
| How accuracy is kept | Periodic full counts. | Cycle counting; the system can block stock. |
| Traceability | At product-code level. | History at lot, serial, expiry and pallet level. |
| Typical user | Finance and purchasing. | Warehouse operations and shift supervisors. |
This is not a quality ranking. In a single warehouse with a few hundred items and a handful of orders a day, the task discipline a WMS imposes is a burden rather than a benefit. The problem appears when an operation keeps using stock tracking software after it has outgrown it.
The threshold: which symptoms call for a WMS
If three or more of these are true for you, the issue is the class of software, not the brand. These are symptoms, not thresholds; verify them with your own numbers.
- A new starter cannot pick without asking someone who knows where things are.
- Stock shows in the system but is missing from the shelf; the gap only surfaces at a count.
- The same item sits in several places and nobody decides which one ships first.
- Expiry dates or lot tracking run in a spreadsheet.
- Picking order is decided by the order in which paper reaches the desk.
- You have to close the warehouse to run a count.
- There is no answer to “who did which job, and how long did it take?”.
- Whether a returned item can be resold is left to individual judgement.
Three things to fix before buying a WMS
A WMS imposes order; it does not absorb disorder. If these three are not ready, the project slips because of data rather than software — the most common cause of delay we see.
- Item master data: barcode, dimensions, weight and packaging hierarchy must be correct. An item without a barcode makes the handheld useless.
- Location structure: shelves must be physically labelled and match the system names exactly.
- Opening stock: an accurate, location-level count taken right before go-live. A wrong opening stock destroys trust in the system in the first week.
A middle path: the ERP's warehouse module
A third option is the warehouse module of the ERP you already run. You buy no separate product, so integration effort drops and stock stays in one place; in exchange, WMS-specific topics such as task management, waves and labour measurement are limited in most ERP modules. The directory lists this class in its own category, and each profile page shows which capability its sources actually state.
Ask the vendor
- Does your product work at location (aisle/bin) level, or only at warehouse level?
- Does the system decide picking sequence, or does the user choose?
- What can be done on the handheld: only counting, or receiving and picking too?
- Does the operation have to stop during cycle counting?
- Are lot, serial and expiry enforced at issue, or merely recorded?
- Do you have a ready tool to migrate data from our current stock tracking software?
To compare the answers yourself, use the <a href="/en/wms-finder">WMS Finder</a> to select your requirements and see source-confirmed capabilities side by side, or browse solution profiles in the <a href="/en/directory">directory</a>.
Frequently asked questions
What is the difference between stock tracking software and a WMS?
Stock tracking software answers “how much do we have?” and holds stock at warehouse level. A WMS answers “where is it, who picks it, in what order?”: it addresses stock down to aisle and bin, turns work into tasks it assigns to users, and directs them step by step on a handheld.
When should you move to a WMS?
If a new starter cannot pick without asking where things are, if stock shows in the system but cannot be found on the shelf, if lot or expiry tracking runs in a spreadsheet, and if you must close the warehouse to count, the issue is the class of software rather than the brand.
What needs to be ready before buying a WMS?
Three things: item master data (barcode, dimensions, weight, packaging hierarchy), a location structure that is physically labelled and matches the system exactly, and an accurate location-level opening stock taken right before go-live. Without these the project slips because of data, not software.
Is the ERP's warehouse module enough?
You buy no separate product, so integration effort drops and stock stays in one place. In exchange, WMS-specific topics such as task management, wave planning and labour measurement are limited in most ERP modules. Check each solution's profile page for what its sources actually state.
Method and corrections: editorial policy.