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Sequence diagram of token payment

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1. The customer selects the product or service in the store app.
2. The customer confirmed the order.
3. The order is generated on the store server.
4. The customer confirmed the payment with the token in the application.
5. The store server receives an order for payment.
6. Encrypted payment information with a token is sent to the Assist system.
7. Assist decrypts the packet with the token and payment data.
8. Assist performs authorization (payment) in the acquiring bank
9. The interbank transaction is carried out
10. The acquiring bank returns the payment result.
11. Assist returns the payment result to the store server.
12. The payment result is displayed in the store application.
13. Assist sends fiscal data to the store server.
14. Assist sends an electronic cheque to the customer via Email and / or SMS.

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