Visa BASE I/II Specifics Quiz

Test your understanding of Visa's ISO8583 implementation, private data elements, TLV parsing, and network-specific requirements.


1. What is the fundamental difference between Visa's BASE I and BASE II systems?
2. In Visa's DE63, what does Subelement 1 contain and why is it critical?
3. What format does Visa BASE I require for bitmaps?
4. You receive a Visa authorization response with DE63 Subelement 3 = 'N' (CVV2 No Match) but DE39 = '00' (Approved). What does this mean?
5. What timezone does Visa require for DE7 (Transmission Date/Time), DE12 (Local Time), and DE13 (Local Date)?
6. When populating DE35 (Track 2 Data) for Visa, what must you do with the track data?
7. What is the correct TLV format used in Visa's DE63 subelements?
8. In DE62 for a Visa authorization, what does 'P2' indicate?
9. A merchant receives Merchant Advice Code '03' in DE48 Tag 26. What action should they take?
10. What combination of fields constitutes the minimum matching key for Visa transactions?
11. What is the primary difference between Visa's 0100/0110 and 0200/0210 message pairs?
12. You're parsing DE63 and the Network ID field contains 'MC' instead of 'VS'. What does this indicate?
13. What does Visa response code '94' indicate and what action should be taken?
14. When parsing EMV TLV data in DE55, how do you identify a multi-byte tag?
15. DE63 is missing from a Visa authorization response. What is the most likely explanation?
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