Frequently Asked Questions About Waveless
June 2, 2026
I started evangelizing waveless processing more than 25 years ago while working at Computer Aided Systems (CASI). I was excited because waveless solved so many of the problems I saw – and still see – in distribution centers: lack of agility, work starvation, disruptive exception handling, and unnecessary shipping delays. When we deployed the first waveless system at a large Ecommerce operation, it increased the capacity of the facility by more than 40% without any additional equipment, just an optimized process with better software.
Unfortunately, waveless has become just a buzzword for vendors. Many of the waveless WES orchestration solutions on the market today are just mini-wave or order streaming offerings. These products lack the real-time decision making of true waveless systems that deliver the promised benefits.
As the person who introduced waveless to the industry, I want to clarify the confusion and answer the questions that I hear most often when explaining waveless processing.
Waveless FAQ
1. In a waveless process, do pickers pick one order at a time, visiting all the locations that have the needed inventory, before they start picking the next order?
No. A waveless process is a fully optimized batch process. Orders in a waveless batch are processed in parallel, same as in a wave-based process.
The key difference is that wave-based processes use static batches, meaning the next wave cannot begin until a previous wave completes. In waveless processes, batches are dynamic. New orders are added to batches continuously as orders complete. This keeps the number of active orders on the floor at max capacity all the time.
2. In a waveless process, do pickers walk more than in a wave-based process?
No. In wave-based systems, pick paths are pre-determined by the orders in the wave. Pickers must complete the path before beginning to pick items for the next wave. In waveless systems, new orders are activated continuously as orders complete. Picks are added dynamically to pick paths as new orders are activated. As a result, waveless systems can have higher pick density with less walking between picks. For example, for Ecommerce orders with an average of 2.5 lines per order, a waveless system can reduce walking by an average of 29%.
3. Is waveless as good for store-replenishment orders as it is for Ecommerce orders?
Yes. A properly implemented waveless process for store-replenishment will perform better than a wave-based process.The batch size in a waveless process is always at least the same size as a wave-based batch; most of the time it will be larger. Also, you can have demand for a SKU in 2 consecutive waves that does not reach the full case quantity in either of the 2 waves. As a result, the item is picked from residual for both waves. With waveless, the demand for the SKU in the 2 static waves can be aggregated in the single dynamic batch allowing it to be picked as a full case.
4. In a waveless process, are large buffers required?
No. A properly implemented waveless process does not require any buffer to operate at optimum performance.
5. Can you load trucks in reverse stop sequence with a waveless process?
Yes. A waveless process manages each shipping door independently of the other shipping doors. Picking for a stop at a door can start as soon as the previous stop is completed for that truck, regardless of the status of the other shipping doors.
6. Are there special requirements for replenishment from reserve to forward in a waveless process?
Ideally, the waveless system manages the replenishment process, operating replenishment as a waveless process too. The potential benefits of this approach include avoiding the notorious late replenishment exceptions caused by wave-based WMS replenishment solutions, more full case picks/less split case picks, and fewer replenishment transactions from reserve to forward.
7. What is the impact of exceptions in a waveless process?
Exceptions can happen in a waveless process, same as in any other process. The difference is that in a waveless process, . In a system that operates with waves, an exception can delay all orders in future waves while waiting for the exception to be handled to complete the wave with the exception. These cascading delays do not happen in a waveless process as there is no dependency on waves completing to start processing new orders.
8. When should I consider waveless processing?
If you are looking for more flexibility and agility in your warehouse operations, if exception handling is a big headache for you, if you would like to reduce the number of late orders created by late replenishments, if you would like to reduce residual picking, or if you are looking to improve efficiency in your operation by eliminating the productivity peaks and valleys typical of wave-based processes, adopting waveless processing can help.
9. Are there any conditions in which wave-based processing works better than waveless?
There may be, but I have not seen it.
Stop being disappointed by fake waveless solutions! Contact Fulfillment Engines today for a no-cost assessment of the potential benefits that you can get by switching to a real waveless process. Don’t be surprised if you can reduce your direct labor by 20% to 30%.
About the Authors
Arturo Hinojosa
Founder and CEO, Fulfillment Engines
Arturo is the product and logistics visionary behind Fulfillment Engines. He is a materials handling industry veteran with over 30 years of experience at industry leaders such as Dematic, Reddwerks, and Fortna. Arturo is a vocal evangelist of the benefits of waveless order processing and applying advanced operations research techniques to solve customer problems. He has a Masters in Operations Research from Stanford University.