Mass balance and corrections
A transformation reconciles the inputs consumed in full with all output lots, process loss and any documented quantity adjustment.
Available inputConsumed inputs + documented quantity adjustment
Mass balanceAvailable input = produced outputs + process loss
Yield · supplementary metricSum of outputs ÷ available input
The application derives process loss as the remaining difference. Yield helps with interpretation; it does not replace the mass balance or act as a separate approval decision.
Example
A transformation consumes 100 kg of inputs in full. A documented 1 kg quantity adjustment gives 101 kg of available input. If two output lots total 95 kg, process loss is 6 kg. The supplementary yield is 95 ÷ 101 ≈ 94.1%.
| Quantity | Amount |
|---|---|
| Consumed inputs | 100 kg |
| Documented quantity adjustment | +1 kg |
| Produced outputs | 95 kg |
| Process loss | 6 kg |
Keep the record traceable
- Select only lots actually consumed by the transformation. Inputs are consumed in full; split a lot first if only part of it will be processed.
- Add together the quantities of all output lots. Inventory left over is not an output of the transformation.
- Give a reason for every quantity adjustment. The balance must reconcile within 0.001 kg; an unexplained difference is not silently accepted as process loss.
- Correcting an already posted movement is separate from recording process loss. Record a linked correction event with a reason so the original entry remains traceable.