One card, one stop
Time, pump, and gallons from the card file, not a monthly total.
Card fraud
A fuel card used by someone who is not your driver.
Fraud is a person or a copied card at a pump your truck did not visit. It is a different pile from a driver who typed the wrong unit and put the fuel in a fleet tank.
Fraud has a shape
The card record shows a location, a time, and a unit number. GPS shows where the tractor was. When the tractor is far from the pump and no other company truck explains the stop, the fill belongs in a fraud review.
A copied card, a loaned card, and a card that should have been shut off all land here. I cannot see the bank's fraud model. I can show you the fills your own systems already disagree on.
What I will not call fraud
If the gallons are in a fleet tank and the only error is the unit number, that is a dispatch habit. It wastes time in a fraud file and it hides the real pattern.
If the tank sensor is jumping, I will not use that unit as proof either way. The fill stays unverifiable until the sensor can be trusted.
What I look for
How a fraud review stays fair
Every tractor nearby
The assigned unit and any other unit that could have taken the fuel.
A person decides
I do not shut off cards and I do not write back to the card system.
Short answers
Before you book.
No. Access is read-only. Your team keeps the authority to block a card.
No. Some are typos. Some are bad sensors. Fraud is the pile that still has no truck after those are removed.
Next step
Let's look at cards that have no truck.
Tell me which card you run and which GPS you trust. I will tell you if a two-week audit is the right next step.