Why the register stops working past a certain size
A register is fine for twenty parties. At eighty it stops being a record and becomes an archive: the total is somewhere in there but nobody can produce it on demand, and reconstructing one party's account means turning pages for twenty minutes. Meanwhile the shop keeps supplying, because refusing a regular customer over a number you cannot state is not a conversation anyone wants. That is how a shop ends up with lakhs outstanding that it discovers only at year end.
Recovery works better when it is not personal
The hardest part of udhaar recovery is the phone call, because the relationship is worth more than the individual bill. A WhatsApp reminder carrying the party's own statement changes the tone completely — it is a record, not an accusation, and most people settle when they can see the detail laid out. Shops that send statements monthly rather than calling occasionally recover faster and argue less. The reminder goes from the outstanding screen in one tap.
Credit limits before the problem, not after
You can set a credit limit against a party and be warned when a new bill would cross it. That warning at the counter, before the material leaves, is worth more than any report afterwards. It also gives your staff a straight answer to give a customer without having to make the decision themselves — the system says the limit is reached, and the conversation goes to you rather than turning into an argument at the counter.
A working recovery routine
The shops that recover well do the same three things. They send every credit party a statement on the first of the month, without being asked and without it being a demand — most people settle when they can see the detail. They call the ninety-day list weekly rather than everybody occasionally, because attention has to go where the risk is. And they set a credit limit on every party, so the decision to stop supplying is made in advance and in the system rather than at the counter in front of a customer. All three take about twenty minutes a week once the ledger is maintaining itself.