negative inventory:
"An error condition resulting from a transaction that drives the perpetual inventory below zero. Systems that allow negative inventory usually provide exception reports for cycle counting and analysis, and specify how the negative is handled in modules such as MPS and MRP. "

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Definitions of terms related to negative inventory:

• Annual physical inventory
• Base inventory level
• perpetual inventory
• physical inventory
• supply chain inventory visibility (SCIV)
• Target inventory level
• wall-to-wall inventory
• work in process (WIP)
• Work in progress
• zero inventory