Card schemes, wallets, and bank transfers rarely share cut-off times. Teams that reconcile each rail in isolation can show green status on every desk while the consolidated balance is wrong. FX holds, scheme fees, and delayed chargebacks are the usual culprits.
A useful assurance test reconstructs a single day’s payment activity into one roll-forward: opening balance, posts, settlements, fees, adjustments, and closing balance. Gaps between that picture and the GL are the audit findings that matter.
If your close calendar still treats rails as independent products, start by naming a single owner for the consolidated view. Then sample three consecutive closes. Patterns appear faster than any one deep dive.