Meaning
A temporal variance describes the cumulative difference in time kept by independent system clocks. When decentralized point of sale registers operate across a retail network, clock drift can cause transactions to be logged out of sequence. This variance can disrupt inventory reconciliation and trigger incorrect automated reorder requests.
Settlement Impact
Distribution agreements require that sales reports from the distributor match the clearing logs of the payment gateway. If clock drift shifts register times by more than a few minutes, daily revenue reports will place transactions in different fiscal periods. This mismatch complicates the calculation of performance-based rebates and delayed credit releases.
Clock Synchronization
The network time protocol maintains synchronization across all merchant systems to mitigate this time drift. Registers are programmed to check against a centralized master clock at regular intervals during the trading day. This frequent calibration prevents the time difference from expanding to a point where financial audits are compromised.
Operational Risk
Unresolved time variance allows bad actors to manipulate promotion windows by claiming discounts on transactions executed after the promotion ended. This risk is managed by setting strict contract rules that invalidate transaction logs carrying a time stamp that diverges from the central gateway time.
