Retrieve All Countries in Nexus

Returns all countries available on the Nexus network, along with key reference data for sending payments to those countries, such as minimum and maximum transaction amounts per currency, currency names and decimal places, requirements for message elements, the country level SLA with maximum execution timeouts as ISO 8601 durations, and the supported instruction priorities. Where a country has more than one IPS, the sla carries the most relaxed timeout across those IPSs and supportedInstructionPriorities carries the union of priorities across those IPSs. Used by: Payment Service Providers (PSPs)