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	protocol											Human
		description															Used to describe human readable messages.
		section										Aggregator					Messages mainly used for interaction with the Aggregator.
			message									amount-to-pay					The amount to be paid
			message									fund-transfer					Transfer fund from a account (bank) to the web-shop.
			message									transfer-successful					The funds were successfully transferred
			message									transfer-failed					The funds were not transferred
			message									payment-successful					The overall payment was successful
			message									payment-failed					The overall payment failed
		section										ATM					Messages mainly used for interaction with the ATM.
			message									validate-card					A card need to be validated
			message									card-valid					The card is valid
			message									card-invalid					The card is invalid, e.g. cannot be read
			message									card-fraudulent					The card is marked as fraudulent and will be confiscated
			message									authorize					The customer has given its pin/password to authorize himself
			message									auth-valid					The authorization is valid
			message									auth-invalid					The authorization is invalid
			message									display-balance					The customer wants to see the balance.
			message									balance-displayed					The ATM shows the balance
			message									withdraw-cash					The customer wants to withdraw cash
			message									cash-issued					The cash has been issued to the customer
			message									deposit-cash					The customer wants to deposit cash
			message									not-enough-cash					The customer does not have enough cash for the withdrawal
			message									deposit-successful					The deposit was successfully handled
			message									deposit-failed					The deposit failed for some reason
			message									insuf-balance					The customer does not have enough balance to withdraw
			message									insufficient-cash					The ATM knows it does not have enough cash
			message									confirm-amount					The counted cash needs to be confirmed by the customer
			message									amount-confirmed					The customer agrees with the amount counted
			message									withdraw-successful					The withdraw was accepted.
			message									abort-deposit					The customer aborts the deposit
			message									deposit-aborted					The deposit is aborted and the money is returned
			message									out-of-order					The ATM is now out of order
		section										Terminal					Messages mainly used for interaction with the Payment Terminal.
			message									start-payment					A request to start payment
			message									start-verification					The verification process is started
			message									show-amount					The amount to pay is shown
			message									method-chosen					The chosen method
			message									contactless-failed					The contact-less payment failed
			message									mobile-failed					The mobile payment failed
			message									validate-pin					The pin code is to be validated
			message									pin-invalid					The pin code was wrong
			message									paid					The customer paid his bill
			message									confirm-pin					The customer needs to confirm the pin-code
		section										Web Shop					Messages mainly used for interaction with the Web-Shop.
			message									customer-agrees					The customer agrees with the order (and amount)
			message									customer-rejects					The customer is not satisfied with the amount and aborts the order
			message									choose-method					The customer needs to choose a payment method.
			message									chooses-cash					The customer chooses to pay with cash.
			message									chooses-terminal					The customer chooses the electronic payment terminal.
			message									change+bill					The customer receives change and the bill
			message									send-invoice					The invoice is send to the customer
			message									ship-goods					The goods are being shipped to the customer
		component										MasterCard					Represents the interface to the MasterCard bank.
		component										Terminal					The physical payment terminal.
			action									show-amount					The amount to pay is displayed
		component										VisaCard					Represents the interface to the VisaCard bank.
		component										WebShop					Represents a WebShop.
			section									WebShop Actions					The actions for the WebShop.
		component										ATM					The physical ATM.
			abbreviation									ATM					Automated Teller Machine
			section									ATM Actions					The actions for the ATM.
		component										PayPal					Represents the interface to the PayPal bank.
		component										Merchant					Represents a merchant.
			section									Merchant Actions					The actions for the Merchant.
		component										Aggregator					Represent a payment aggregator.