DotOne teamWhat is a WMS?
A warehouse management system (WMS) records and directs every movement of goods in a warehouse. Inventory software tells you how much stock you have. A WMS also tells you where it is, down to the rack or bin, and guides people through receiving, storing, picking and shipping it.
The result is fewer picking errors, faster dispatch, stock figures that match the shelf, and a record of who moved what and when.
How a WMS works: the warehouse flow
- Receiving (inward). Goods are received against the purchase order. Quantities and quality checks are recorded on the goods receipt note (GRN).
- Put-away. The received goods are assigned to a storage location: a rack, bin or area.
- Storage. Stock is held by location, batch and, where needed, serial number or expiry date.
- Picking. When a sales order or production issue comes in, the WMS lists what to pick and from where.
- Packing and dispatch (outward). Goods are packed, checked and dispatched with a delivery challan and invoice. Stock reduces as they leave.
- Transfers and counts. Stock moves between warehouses with a document on both sides, and cycle counts keep the system in line with the shelf.
Core WMS features
- Location management: racks, bins and zones, so every item has an address.
- Barcode or QR scanning: scan on receipt, put-away, picking and dispatch to stop wrong items moving.
- Batch, serial and expiry tracking: essential for pharma, food, chemicals and anything with a warranty.
- Picking rules: FIFO (first in, first out) or FEFO (first expiry, first out).
- Multi-warehouse: stock across plants, depots and godowns in one view, with inter-site transfers.
- Reports: stock by location, ageing, slow movers, and pending inward and outward.
WMS vs inventory management vs ERP
| Inventory management | WMS | ERP | |
|---|---|---|---|
| Main question | How much stock do we have? | Where is it, and what should we do with it? | How does the whole business run? |
| Scope | Quantities, values, reorder levels | Locations, picking, packing, dispatch | Sales, purchase, production, finance, HR, plus inventory |
| Best for | Small stores and simple stock | Busy warehouses with many items and locations | Businesses that want every department in one system |
Large distribution centres often run a standalone WMS connected to an ERP. For most Indian manufacturers and distributors, a warehouse module inside the ERP is enough, and it avoids keeping two systems in sync.
How to choose a WMS
- Start from your problems. Wrong picks, lost stock, slow dispatch or stock that never matches? Choose features that solve those.
- Check scanning on the phones your team already uses. Dedicated scanners are not always needed.
- Make sure it connects to purchase and sales, so receipts come from POs and dispatches from sales orders, without re-entry.
- Look for GST documents: delivery challans, e-way bill details and invoices from the dispatch.
- Insist on multi-warehouse if you have more than one site, now or in the next few years.
DotOne Warehouse Management covers inward and GRN, put-away to racks and bins, picking and packing, dispatch with delivery challans, transfers between sites and QR scan-to-verify, inside the same ERP as purchase, sales and accounts.