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Payment Switch Routing Graph

Follow a payment switch through validation, routing, field mapping, duplicate control, issuer reachability, stand-in, and recovery journaling.

IngressRulesRouteIssuerStand-inJournalmsgIngress validates structure and trustbeginner operating viewFocus: Ingress
Step 1 / 8Ingress validates structure and trust

The switch first checks that the message is well formed, comes from a trusted participant, and carries a coherent set of transaction fields.

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