If they 'Z3' is the correct response code when the terminal is unable to go online, but sometimes 'Z3' shows up in tag 8A when it's not expected. Why?
Basically, if you send a result code to the reader that is NOT RECOGNIZED not recognized by the kernel, the kernel will change it to "'Z3" ' (5A33). The kernel is not recognizing their For example: the kernel may not be recognizing result code 3035. Instead, it gets changed to 5A33 ('Z3').
You need to configure Solution: You can use tag DFEE1B in the Terminal settings to define your three response codes, : Approved/Referral/Decline.
DFEE1B is defined as 8 bytes long.:
- Bytes 0/1
...
- are for Approved Code
- Bytes 2/3
...
- are for Referral Code
- Bytes 4/5
...
- are for Declined Code
- Bytes 6/7 are Reserved for Future Use (RFU).
Example: If the host uses 3030 as APPROVED, 3031 as REFERRAL, and 3035 as DECLINED, you would make sure the following TLV is included in your terminal settings:
DFEE1B 08 3030 3031 3035 0000
Once DFEE1B is properly defined with the DECLINE = 3035, then the kernel will recognize and properly process their transactionthe transaction.
NOTE: To set the tag on a per-transaction basis, you can send DFEE1B in the emv_completeTransaction() method, in the Universal SDK, or provide DFEE1B in the "extra tags" of the Complete Transaction parameters in the Universal Demo app.
See also:
| Filter by label (Content by label) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|