1. Define scope and map workflows
Document receiving, storage, order prioritisation, picking, packing, shipping, returns and counts. Mark exceptions and who owns each decision.
WMS
Replace your WMS without stopping the warehouse
A practical plan for replacing a WMS: process mapping, data, integrations, testing, training and controlled go-live.
Short answer
A WMS replacement should be divided into mapping, data migration, integration work, acceptance testing and a controlled go-live. Clear owners and realistic test cases reduce operational risk.
- Map current and target workflows
- Clean and verify master data
- Test the complete order chain before launch
2. Prepare data and integrations
Decide which item, stock, customer and order history to move. Define fields, format, frequency and error handling for every integration.
3. Test and go live
Run realistic scenarios from incoming order to shipment status and finance. Plan stock freeze, opening balances, named owners and a fallback path for critical errors.
Frequently asked questions
How long does a WMS migration take?
It mainly depends on process complexity, data quality and the number of integrations. A focused implementation is faster than changing every process at once.
Must all history be migrated?
No. Current master data, open orders and a verified opening balance are often enough, while old history remains readable in the previous system.
What is the most important test?
A complete end-to-end test from the order source through picking and shipping to correct status reporting.
Related content
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How to choose a WMS for 3PL
A concrete guide to choosing a 3PL WMS based on clients, warehouse flows, integrations, billing and implementation.
Integrations
WMS API for custom integrations
Integrate order, item and inventory flows with Comreact's REST API and webhooks over HTTPS.
Integrations
sFTP integration for a WMS
Connect ERP, client systems or marketplaces to a WMS through secure, managed sFTP exchange.
Want to see how it would work in your warehouse?
Tell us about your workflows, volumes and integrations, and we can assess the next step together.