Single Sale

How Register works in the 1-step Pre-Selection flow, where the price is known at card presentation.

The product price is known at card presentation and the payment is processed in a single Sale call. Register fires immediately after Sale approval, before the product is dispensed.

Flow

The following sequence shows how Register fits into the single sale flow:

1. Consumer presents a card and selects a product at a known price
2. Nayax Engine processes the Sale via the Payment Provider
3. Nayax Engine sends POST /FisCortina/Register to your server
4. Your server registers the transaction and returns a response (must include Verdict, FiscalRrn, and FiscalId)
5. Product is dispensed

Exception handling

Because Register fires before dispensing, a failed fiscal registration can optionally trigger a transaction cancellation (disabled by default; contact your Integration Engineer to enable):

Scenario	Step	Resolution
Sale failed or declined	2	Nayax aborts the session. No Register call fires. Nayax does not charge the cardholder.
Registration declined	3–4	Nayax logs the failure. By default, the transaction proceeds. If Cancel is enabled, Nayax cancels the transaction and does not dispense the product.
Registration timeout	3–4	By default, FisCortina cancels the transaction immediately with no retries. If retry is enabled, FisCortina queues the registration for async retry.
Vend failed (product not dispensed)	5	Nayax Engine sends POST /FisCortina/Void to un-register the fiscal record.

Request field notes

PaymentInfo.AuthDateTime uses a 12-digit format for card transactions. MachineAuTime and MachineSeTime always use 17 digits:

Field	Format	Digits	Example
PaymentInfo.AuthDateTime	YYMMDDHHmmss	12	230226093406
BasicInfo.MachineAuTime	YYYYMMDDHHmmssfff	17	20260223093406383
BasicInfo.MachineSeTime	YYYYMMDDHHmmssfff	17	20260223093550020

BasicInfo.TransactionId is always present for card transactions. It may be short (11 digits) or long (36 digits, zero-padded):

Format	Example
Short (11 digits)	23083406429
Long (36 digits)	000000355897454624064012793151470385

Next steps

Void

Un-register a transaction when a product is not dispensed.

Request & Response Reference

Full field definitions and response codes for all endpoints.