Issuer Collaboration and Data Insights
This presentation highlights how one size does not fit all, and how inspecting and comparing the raw requests sent to acquirers and forwarded to issuers is often a good place to start.
Readers will also learn best practices, including advice for contacting processor(s)/acquirer(s) and for validating observed behavior using as many sources as possible before engaging in issuer outreach.
Lastly, expect to learn how each country/Issuer/BIN differs from others in/out of country; some acquirers might be sending defaulted values on your behalf e.g. low value exemptions.
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