Inside Secure ACCESSO Manual Do Utilizador

When an error occurs, coupler response is only status words SW1 SW2. No data is
returned.
The following table sums up the various values.

Command successful

Data length, P3 incorrect

Parameters P1, P2 incorrect

Class not recognized

Instruction not recognised, parity error

Card not identified (CRC or authentication 
problem)

Command flow incorrect

Card not found

EEPROM erro