FER&REN Portal / Rolls, loose meters, movements, and auditing.
PPF inventory
Models stock as rolls and available meters, with location transfers, receiving, conversion, sales, and an administrative audit log.
01Input
Each receipt identifies material, roll, available meters, and physical location.
02Process
Transfers, conversions, consumption, and sales generate explicit movements.
03Outcome
Administration reviews stock and history to reconcile differences.
How I built it
Inventory distinguishes complete rolls from loose meters to represent how material is actually used. Instead of overwriting a quantity, each operation creates a history entry that explains the origin of the current balance.