Warehouse reference · Logistics & WMS foundations
Warehouse constraints and bottlenecks
A constraint limits what the operation can complete under current conditions. It may be physical capacity, equipment, labor availability, data quality, a decision, or a system dependency. The visible queue is a signal, not always the cause.
How it works in practice
Observe where work waits and what releases it. Compare arrival rates, processing time, availability, and downstream capacity over the relevant period. Separate a temporary disruption from a persistent structural limitation.
A warehouse example
Packing may accumulate work because replenishment releases orders in bursts, not because every pack station is inherently too slow. Investigate the arrival pattern before adding stations.
Illustrative scenario, not a claim about a client engagement.
What to watch for
Improving a non-constraining activity can increase work in progress without increasing finished shipments. Measure the end-to-end result and the effect on adjacent activities.
A useful question
What evidence would show that the suspected bottleneck is really limiting output?
Terminology and configuration differ by product. These notes explain general concepts and are not operating instructions for equipment, a compliance determination, or a replacement for your site’s approved procedures.
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