Scenario	Expected handling by your system
Authorization approved	Reserve or block the approved amount and any applicable fees according to your ledger rules.
Authorization declined	Do not block funds. Store the decline reason and response.
Partial approval	Reserve or block only the approved amount, when partial approval is supported.
Duplicate authorization	Do not apply balance, block/reserve, or ledger impact again. Return the same logical response as the original processing.
Authorization later reversed	Release or adjust the related blocked amount when the reversal message is received.
Presentment later received	Match the presentment to the authorization and post or reconcile the transaction according to your ledger rules.