+ TxRefNum => ':order_number', # used only for Refund
+);
+
+tie my %mark_for_capture, 'Tie::IxHash', (
+ OrbitalConnectionUsername => ':login',
+ OrbitalConnectionPassword => ':password',
+ OrderID => ':invoice_number',
+ Amount => ':amount',
+ BIN => ':bin',
+ MerchantID => ':merchant_id',
+ TerminalID => ':terminal_id',
+ TxRefNum => ':order_number',
+);
+
+tie my %reversal, 'Tie::IxHash', (
+ OrbitalConnectionUsername => ':login',
+ OrbitalConnectionPassword => ':password',
+ TxRefNum => ':order_number',
+ TxRefIdx => 0,
+ OrderID => ':invoice_number',
+ BIN => ':bin',
+ MerchantID => ':merchant_id',
+ TerminalID => ':terminal_id',
+# Always attempt to reverse authorization.
+ OnlineReversalInd => 'Y',