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What is an Unauthorised Transaction?

Modified on: Tue, 11 Mar, 2025 at 12:46 PM

Harrison Court By Harrison Court

An unauthorised transaction occurs when SmartFill detects flow on the pump but has not authorised any dispense. Unauthorised transactions can be identified by the row on the transaction being greyed out and having no asset/driver information.




A transaction like this may appear under the following circumstances;

  • Someone is opening the SmartFill unit and engaging the bypass switch inside the SmartFill.
  • Someone activating the pump externally from the SmartFill unit
  • Electrical noise/interference affecting the pulse signal inside the SmartFill
  • A hardware fault within the flowmeter/pulser setup.
  • Fuel backflowing into the flowmeter, causing phantom litres to be counted.


We recommend that you contact our support team to initiate a further investigation. Once a ticket has been raised, our support team will help identify what may be happening at the system and what action must be taken.

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