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Insights on production scheduling, lean manufacturing, and manufacturing software from 35+ years of industry experience.
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What Is an Instance Selection Strategy in Scheduling?
An instance selection strategy decides which machine the engine prefers when several have room: spread the load, pack the busiest, or take the first. Learn all three.
What Is an Operation State in a Production Gantt?
An operation state is the color-coded flag on a scheduling Gantt bar that records how the operation got to where it sits: engine-placed, dragged, saved, replaced, or flagged for review.
What Is an Original Scheduled Date in a Production Schedule?
An original scheduled date is the start or end an operation received on its very first scheduling run, frozen and never overwritten, so per-step variance stays measurable.
What Is an Overnight Shift Wrap-Around in Scheduling?
An overnight shift wrap-around is how a scheduler handles a shift whose end time is earlier than its start. Learn the duration math and which calendar day the hours land on.
What Is Atomic Rollback in Production Scheduling?
Atomic rollback means a scheduling attempt that fails partway leaves zero residue: every booking it made is removed and the capacity it claimed is released.
What Is Drum-Buffer-Rope in Manufacturing?
Drum-Buffer-Rope is the Theory of Constraints method that paces a whole plant to its bottleneck. Learn the three parts and which of them a finite-capacity scheduler provides.
What Is Firming in Production Planning?
Firming turns a suggested build quantity into a real manufacturing order. Learn what firming commits, why it is idempotent, and how it differs from suggesting.
What Is Global Instance Assignment in Scheduling?
Global instance assignment keeps one job on the same machine instance for every shift it occupies on a work center, trading a little load balance for setup continuity.
What Is Greedy Scheduling in Manufacturing?
Greedy scheduling plans one job at a time, taking the earliest feasible slot at each step and never revisiting it. Fast, always feasible, and predictably suboptimal in one specific way.
What Is Open Quantity on a Sales Order Line?
Open quantity is what a customer is still owed: ordered quantity minus shipped, floored at zero. See how it drives firm demand and shrinks as shipments post.
What Is Override and Warn in Production Scheduling?
Override and warn is the contract where a planner can move any operation and the system flags the consequences without blocking the move. Learn what it does and does not check.
What Is Positional Column Mapping in a Data Import?
Positional column mapping reads each field from a numbered column instead of a heading name. Learn when a headerless file needs it and the risk it carries.