Stefi Case Studies
We should test an outgoing 421 message, but cannot
create the environment to produce one. We can only produce 420 message.
We produce the 420 message, keep it in the SAF, update the SAF record
with Stefi (overwrite "420" to "421"), then let the transaction go on.
During a stress test we would like to see what transaction response
times the system will produce on high transaction/sec levels.
With Stefi's PTLF/TLF viewer the response times are calculated for
every record and it is easy to position to the end of the log files to
see the latest transactions.
For any reason the POS segment is slowed down. Prognosis is also slowed
down, GGS replicator also. You have to take a look at the latest PTLF
transactions. With Stefi it is easy, you will see the very last
transactions, with no delay.
EMV TIP certification
With Stefi’s Token Browser you receive detailed information about the
During the TIP certification process it appeared that the Card sends
different 9F33 tag (Terminal Capabilities) info towards the terminal
(E8F8C8) and towards the MC simulator (E0F0C0). The second value comes
from a PTD field, that could be easily changed if we already had B24
V10. But we had still V6, that has no support for this.
We used Stefi to update this PTD field, as a Hexa field.
Some records are missing from the PTLF Extract, because the PTLF was
not closed on time, transactions was added after the Extract generation.
Create a temporary PTLF file and copy the missing transactions from the
lately closed PTLF into this temporary one. This copy can be made with
Stefi, defining a filter for the TimeStamp (DAT-TIM) field. An Extract
can be produced from this temporary PTLF.
enhancement for ATM AMEX transactions
To support business decision we should be able to say
the percentage of EMV transactions regarding the acquiring AMEX ATM
The terminals are all EMV capable, Track2 is not present in the TLF.
The B4 token's LAST-EMV-STAT field can be used to select the EMV
transactions. With Stefi we can make a filter to count only those
transactions that has a specific LAST-EMV-STAT value in the B4 token.