Response APDU structure

Command APDU의 응답으로 Response APDU를 반환해야 한다.
Response APDU는 아래와 같이 구성된다.

Contents of Response APDU

Code	Length	Description	M/O
Data	Lr	Response data string	Optional
SW1	1	Status byte 1	Mandatory
SW2	1	Status byte 2	Mandatory

SW1, SW2를 Status Word라 부르며, 다음과 같은 응답값을 가진다.

Normal processing

SW1	SW2	Description
90	00	- Normal ending of the command
91	XX	- Normal ending of the command, with extra information from the proactive UICC containing a command for the terminal. Length 'XX' of the response data.
92	XX	- Normal ending of the command, with extra information concerning an ongoing data transfer session.

Postponed processing

SW1	SW2	Description
93	00	- SIM Application Toolkit is busy. Command cannot be executed at present, further normal commands are allowed.

Warning

SW1	SW2	Description
62	00	- No information given, state of non volatile memory unchanged.
62	81	- Part of returned data may be corrupted.
62	82	- End of file/record reached before reading Le bytes.
62	83	- Selected file invalidated.
62	85	- Selected file in termination state.
62	F1	- More data available.
62	F2	- More data available and proactive command pending.
62	F3	- Response data available.
63	F1	- More data expected.
63	F2	- More data expected and proactive command pending.
63	CX	- Command successful but after using an internal update retry roution 'X' times - Verification failed, 'X' retries remaining (see note)
NOTE:	For the VERIFY PIN command, SW1SW2 indicates that the command was successful but the PIN was not correct and there are 'X' retries left. For all other commands it indicates the number of internal retries performed by the card to complete the command.

Execution errors

SW1	SW2	Description
64	00	- No information given, state of non-volatile memory unchanged.
65	00	- No information given, state of non-volatile memory changed.
65	81	- Memory problem.

Checking errors

SW1	SW2	Description
67	00	- Wrong length
67	XX	- The interpretation of this status word is command dependent, except for SW2 = '00'
6B	00	- Wrong parameter(s) P1-P2
6D	00	- Instruction code not supported or invalid.
6E	00	- Class not supported.
6F	00	- Technical problem, no precise diagnosis.
6F	XX	- The interpretation of this status word is command dependent, except for SW2 = '00'

Functions in CLA not supported

SW1	SW2	Description
68	00	- No information given
68	81	- Logical channel not supported
68	82	- Secure messaging not supported

Command not allowed

SW1	SW2	Description
69	00	- No information given
69	81	- Command incompatible with fire structure
69	82	- Secure status not satisfied
69	83	- Authentication/PIN method blocked
69	84	- Referenced data invalidated
69	85	- Conditions of use not satisfied
69	86	- Command not allowed (no EF selected)
69	89	- Command not allowed - secure channel - security not satisfied

Wrong parameters

SW1	SW2	Description
6A	80	- Incorrect parameters in the data field.
6A	81	- Function not supported.
6A	82	- File not found.
6A	83	- Record not found.
6A	84	- Not enough memory space.
6A	86	- Incorrect parameters P1 to P2.
6A	87	- Lc inconsistent with P1 to P2.
6A	88	- Referenced data not found.

Application errors

SW1	SW2	Description
98	50	- INCREASE cannot be performed, max value reached.
98	62	- Authentication error, application specific.
98	63	- Security session or association expired.
NOTE:	Applications may define their own error codes.