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Point-of-sale icon

Transaction flows

Before using POS systems and connected PEDs to process transactions on the plataforma de pagamentos da Adyen, the PEDs should be authenticated and authorised (at least once) with the plataforma de pagamentos da Adyen. The POS system should be able to communicate with the Adyen PSP (https:443 - Internet).

Authentication and authorisation of the POS is done by entering the Adyen provided credentials; after which the POS is authorised. The POS can then authenticate and authorise any PEDs that are connected to it.

PED registration flow

Basic sale transaction flow


Additional calls during transactions might happen between the Payment terminal (PED) and the Cash register (POS). They are communicated in the same way as in the steps StartTransaction (1) and TransactionResult(8) through https:8443 (LAN).


This flow is used to accept a normal payment.

Sale with Digital Customer Recognition

This flow can be used in case loyal customers as recognized based on card number will get the discount. It can also be used for upselling with a use of customer recognition.