Six questions on MTIs, bitmaps, correlation fields, timeouts, reversals, and parser discipline in card-authorisation flows.
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Why do ISO 8583 systems keep correlation fields such as STAN and often an RRN?
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Six questions on MTIs, bitmaps, correlation fields, timeouts, reversals, and parser discipline in card-authorisation flows.
Why do ISO 8583 systems keep correlation fields such as STAN and often an RRN?