Facts checked on 27 October 2026. Published by MDG Services on 8 November 2026.
Example: a made-up business with made-up figures. It is not a real customer.
The set-up
Sharma Fuels, a made-up petrol pump, sells diesel at Rs 90 a litre on credit to Gupta Transport, a made-up transport business with a limit of Rs 2,00,000. Gupta Transport sends a request for truck UP00 SH 1006: 200 litres. Rs 40,000 is already owed.
What both phones show
At 10:40 am, a nozzle man ("Nozzle man A", a made-up name) types the last 4 digits, 1006, and sees the green light, "You can fill". He types 200 litres and Rs 18,000, the figures from the request, takes a photo of the dispenser slip, and taps Done. The line on the pump's phone and on the transporter's phone reads:
- Fill: 200 litres, Rs 18,000, truck UP00 SH 1006, filled by Nozzle man A at 10:40 am.
- Photo: the dispenser slip, added by the nozzle man.
- Marks: none. 200 litres matches the request, so the fill is not marked as more than requested.
The app did not catch the mistake. It cannot read the dispenser. The transporter sees the line and calls the pump: the truck took 150 litres.
How the line is corrected
The manager opens the fill and looks at the photo of the slip: 150 litres. Nozzle man A had typed the requested 200. The manager corrects the fill, writes the reason "Typed 200, slip says 150", chooses to cancel it and enter the right fill, and enters 150 litres and Rs 13,500. No bill has been made yet.
| Line | Litres | Rupees | Owed after |
|---|---|---|---|
| Owed before | 40,000 | ||
| Fill by Nozzle man A | 200 | 18,000 | 58,000 |
| That fill, struck out | -200 | -18,000 | 40,000 |
| New fill, entered by the manager | 150 | 13,500 | 53,500 |
The transporter's phone shows the first fill as struck out, then the new line. He sees the reason too, beside the struck-out line and the new line. He owes Rs 53,500 (40,000 + 13,500). See what a correction looks like.
If the record was right
Say the slip in the photo shows 200 litres. The owner shows the transporter the line, the time, who filled and the photo, and keeps the fill as it is. Nothing is changed.
For more on this, see a disputed credit fill and the optional photo with a fill.
Questions people ask
01How does a transporter raise a doubt about a fill?
The transporter sees every line on his own phone and calls the pump. The owner or a manager can then correct a wrong line, with a reason, as a new line.
02Does the old line disappear after a correction?
No. Once the fill has reached the transporter's phone, nothing is edited. The old line stays, marked struck out, and the new line sits below it, so both sides can see what changed.
03Can a fill be corrected after a bill is made?
Not while it is on a bill. The owner cancels the bill first, then the fill is corrected, then a new bill is made. The cancelled bill's number is not used again.
Related pages
About Khata Kavach (advertisement)
Khata Kavach is a shared credit book for petrol pumps, from MDG Services. The transporter asks before each truck fills, your nozzle man sees the limit before he fills, and both of you see every fill, payment and bill. It never lends or holds money.