MONEY ≠ WATER QUANTITY

Commercial & water-credit ledgers

Keep financial accounting separate from meter-available water. A paid transaction can still have an unapplied token/credit delta.

Journal balanced

Journal	Account	Side	KSh	Reference
J1	cash_mpesa	debit	1,000	MPE-DEMO-1
J1	customer_liability	credit	1,000	MPE-DEMO-1
J2	customer_liability	debit	800	BILL-DEMO-8
J2	water_revenue	credit	800	BILL-DEMO-8

DebitsKSh 1800

CreditsKSh 1800

VarianceKSh 0

Event	m³	Reference
purchased_credit	12.5	VEND-1
meter_confirmed	-12	METER-ACK-1

Purchased / granted12.5 m³

Meter-confirmed12 m³

Unresolved delta0.5 m³

Do not silently convert a currency balance into a water-volume balance without the exact tariff/version and vending evidence.