Stages

Below is a list of stages returned by the terminal during a transaction, along with their meaning and description:

Code	Token	Description
1	CHECK REQUEST DATA	The terminal checks the received request data from the call and returns a response. No customer interaction needed.
2	CARD HANDLE	The terminal displays the “Present the card” screen. Customer interaction needed.
3	PIN HANDLE	The terminal displays the “Enter PIN” screen. Customer interaction needed.
4	PROCESSING DATA	Applicable only for “Slave” mode. The terminal uses the caller's connectivity to transport specific data to the HOST and receives a response. This stage can be repeated as many times as needed. The terminal will display relevant screens during the process depending on the executed call. No customer interaction needed.
5	PROCESSING OUTCOME	After successful communication with the HOST, the terminal returns the response in this stage.