Inventory is the materials, parts or units sitting unused in a process. Excess inventory before a process step indicates a bottleneck and maintaining more inventory than required ties up capital and takes up valuable storage area. Inventory is one of the 8 Wastes.

For a better understanding of Inventory and an overview of Lean Six Sigma,check out our Free Lean Six Sigma Yellow Belt Training, Green Belt Training or Lean Training.

Tracy O'Rourke

Tracy is a Managing Partner & Executive Advisor at For almost 20 years, she's helped leading organizations like Washington State, Cisco and GE build problem-solving muscles with Lean Six Sigma to achieve their goals.