PaymentRequest

Component					Type	Required	Description
SaleToPOIRequest					Defined datastructure
	MessageHeader				Defined datastructure
		MessageType			Enumeration	Required	Value: `Request`
		MessageClass			Enumeration	Required	Value: `Service`
		MessageCategory			Enumeration	Required	Value: `Payment`
		SaleID			String	Required	Identification of a Sale System for the NEXO Sale to POI protocol.
		POIID			String	Required	Identification of a payment terminal for the NEXO Sale to POI protocol.
		ProtocolVersion			String	Conditional	Value: `3.0`
		ServiceID			String	Conditional	Identification of a message pair, which processes a transaction. Rule: Required if MessageClass is Service or Event, or if MessageClass is Device and it is a request from the terminal or a response from the Sale System.
	PaymentRequest				Defined datastructure
		SaleData			Defined datastructure	Required	Data related to the Sale System.
			SaleTransactionID		Defined datastructure	Required	Identification of a Sale transaction.
				TransactionID	String	Required	Unique identification of a transaction. To identify the transaction on the Sale System (e.g. ticket number), or the payment terminal.
				TimeStamp	ISODateTime	Required	Date and time of a transaction for the Sale System, the payment terminal or the Acquirer. Ensures the uniqueness of a transaction and indicates the time when the event occurs in the EventNotification message.
			TokenRequestedType		Enumeration	Conditional	Type of token replacing the PAN of a payment card to identify the payment mean of the customer. It allows, for a merchant, to use a token for a transaction only or for a longer period.
			SaleReferenceID		String	Conditional	Identification of a Sale global transaction for a sequence of related POI transactions. Rule: If payment reservation.
		PaymentTransaction			Defined datastructure	Required	Data related to the payment and loyalty transaction.
			AmountsReq		Defined datastructure	Required	Various amounts related to the payment and loyalty request from the Sale System.
				Currency	ISOCurrency	Required	Currency of a monetary amount.
				RequestedAmount	SimpleAmount	Conditional	Amount requested by the Sale for the payment.
	>		TransactionConditions		Defined datastructure	Conditional