Is your Warehouse Slowing you Down? 3 Key Signs that it's time for a WMS.

For most scaling retailers, merchants and brands, there comes a point where warehouse labour and customer demand begin to outweigh growth capacity.

These bottlenecks appear at every stage of the supply chain, affecting warehouse staff and ultimately leading to unhappy customers at the doorstep - unless the right systems are in place. Traditional, manual warehouse management simply isn’t built for today’s high‑speed, digital and competitive eCommerce environment. It’s now widely understood that online shoppers expect not only quality products but a fast, reliable delivery experience.

“91% of eCommerce shoppers choose where to buy based on next‑day delivery options, rising to 97% for those who shop more than once a week.” Source

“65% of online merchants plan to offer same‑day delivery in the coming years.” Source

These expectations don’t just mean your business needs reliable delivery and last‑mile solutions; they mean your warehouse must be equipped for accurate stock visibility, fast picking and packing, and high‑speed shipping.

So, how do you know when it’s time for your business to upgrade?

1) You’ve lost control of your stock:

Do you have real‑time visibility of your inventory?  

You should be able to consistently see what you have, where it is, and whether it’s available to sell. Without this, customers may order out‑of‑stock items, and may not return after a poor experience.

Are your over‑stretched staff making mistakes?  

Relying solely on paper processes and people to manage thousands of items a day is unrealistic. Pick slips get lost, spreadsheets leave room for error, and staff become overwhelmed. Packing stock without automation creates costly, time‑consuming mistakes.

Do damaged or misplaced items go unreported?  

Untracked errors and misallocated stock lead to customer complaints, warehouse guesswork, missing items and lost sales. Without software intelligence, it becomes increasingly difficult to identify gaps in the system, respond to queries in a timely manner, and locate lost goods.

2. You’ve hit 500 SKUs - or you ship complex SKUs:

Handling 500+ SKUs or receiving 100+ orders a day is often the tipping point for needing a WMS, though many brands benefit from implementing one sooner. This is typically when bottlenecks appear and inefficient workflows begin to limit growth.

Even small warehouses see significant improvements with a WMS:

• Inventory accuracy increases to 95–99%, eliminating costly discrepancies
• Order picking speeds increase 25–40% through optimised workflows

Source

Some businesses need a WMS not because of SKU volume, but SKU complexity. Furniture brands, wholesalers and manufacturers often deal with multi‑part orders, split deliveries and intricate product structures. Maintaining visibility and control over these manually requires staff to align delivery locations, order numbers and documentation across hundreds or thousands of SKUs daily. Using features such as Incremental Label Return (launching in Peoplevox and Shiptheory from April) is the perfect way to optimise the use of your WMS when selling complex SKUs, large items or multi‑part orders.

3. You've got a backlog of orders.

A backlog of orders waiting to get out the door can be a sign of growth, peak season or increased demand. But without the right systems to process orders efficiently, it can quickly damage customer experience and operations, costing you thousands in missed sales and positive reviews.

One Shiptheory and Peoplevox customer, Druids Golf, manages an inventory of over 15,000 SKUs and processes 10,000 items a day, with an average of four items per order. Scaling at this level simply wouldn’t be possible without an effective WMS.

“We switched to Peoplevox because we needed a reliable solution to streamline a large volume of orders. When we first made the switch, we had a backlog of 14,000 orders—and incredibly, we worked through those. It’s been streamlined ever since.”

In Summary

When stock visibility slips, errors increase, or order backlogs start piling up, it’s a clear sign the business has outgrown manual warehouse methods. 

A modern WMS, such as Peoplevox, gives brands the real‑time accuracy, workflow automation and operational speed needed to stay competitive. Whether they’re managing 500+ SKUs, handling complex multi‑part orders, or processing thousands of shipments a day, investing in the right system is key to unlocking sustainable growth.

A full guide on setting up Peoplevox with Shiptheory can be found here. 

New to Shiptheory? Get started for free!

New to Peoplevox or would like to learn how to upgrade your WMS? Book a demo with our shipping consultants.

You can contact us at support@shiptheory.com or call +44 117 403 4313 / +1 629 6666 726.