APDU status word · ISO/IEC 7816-4 · EMV
63CXVerification failed — X tries left
What does APDU response 63CX mean?
Warning: counter value X (0–F), usually the number of remaining attempts after a failed verification.
SW1
63
SW2
CX
Category
Warning
Defined in
ISO/IEC 7816-4
In an EMV transaction
- Returned to an offline PIN VERIFY with the wrong PIN: 63C2 means two PIN tries remain. The terminal sets "Incorrect PIN" and may let the cardholder try again.
- 63C0 means no tries remain — the next VERIFY will be refused with 6983.
Decode any value
Paste any SW1 SW2 status word — including proprietary and card-OS specific values — to look it up in the full list.
Open the APDU Response Codes