For a given AFT/OCT, the systemsTraceAuditNumber, retrievalReferenceNumber and acquiringBin combination must be unique in a 24 hour period.
Since our application would be using the same acquiringBin value for every OCT/AFT, and for each OCT/AFT the recommended format for the retrievalReferenceNumber contains the corresponding systemsTraceAuditNumber used in the api call.
These constrains seems to limit the number of OCT/AFT calls that can be made in a 24 hour period to the number of unique systemsTraceAuditNumbers available, in this case: 6 digit integer => 0 - 999,999.
Therefore our application can only make 999,999 OCT/AFT calls in a given 24 hour period.
Is this line of thinking correct and is there a limit of 999,999 calls in a 24 hour period?