Reservations subtract first
Stock committed to another job is not available to this one even if it remains physically present. Confirmed incoming can be included, but only when you are willing to schedule against it.
STOCK COVERAGE
Know whether the job
consumes the buffer.
Separate physical stock from reservations, confirmed incoming and protected safety stock. The planner shows whether the current job is covered and what inventory position remains after production.
✓ Local state✓ Explicit status✓ Exportable evidence
Model usable stock
Availability after reservation
Net available–on hand − reserved + incoming
After job–remaining units
Coverage–jobs at same requirement
Signal–stock position
MODEL
Enter material position.
Safety stock is protected before additional coverage is counted.
Available is not the same as physically on the shelf.
Safety stock is deliberate
The planner protects the entered safety quantity before reporting repeat-job coverage. That reserve can represent damage, color matching, spoilage or continuity requirements.
Reorder is a policy signal
Falling below the reorder point does not mean the current job fails. It means the post-job inventory position crossed the threshold you chose for replenishment.