Property-office records
Ryszard Cieplechowicz: a promise is not a posted payment
Three states are easy to mix up in an office: promised, received and posted.
A resident says they will pay Friday. That is a promise. A receipt or confirmation is received. An accounting entry is posted. Each needs its own evidence, and none proves the next.
Review the open promises on the day after each promised date. If nothing is received, the follow-up is the next action and someone owns it.
The full ledger layout is on the main site: payment-promise follow-up ledger. Use a private office system, not a public spreadsheet, for real records.