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adding rfa to tags
No. To convert ISIN to RIC you need access to reference data, which RFA does not provide. You need a product that provides reference data such as for example Datascope Select.
Using RFA API How can we get Last Updated/History Data
How to know the RIC for each Update?
How to create RIC using Java OMM API?
Update several RICS with one OmmConsumer.Submit()
Which RICs need to use to get historical data from TS1 database for Russian government zero-curve ?