Brasilien, Föderative Republik 6% 23/33 – US105756CF53
To qualify for stocks & shares ISA inclusion, government securities need to be issued by (or on behalf of) a government in the European Economic Area (EEA) or the UK.
In this case, the security is being issued by (or on behalf of) the Brazilian government, which is not a member of the EEA, meaning that the securities will not qualify for ISA inclusion.
So, although the currency bonds (government securities) are traded on the Borse Frankfurt stock exchange (a recognised stock exchange) see link below, the actual listing (or trading) status is irrelevant.
Brasilien, Föderative Republik 6% 23/33 Bond | A3LGHS | US105756CF53 | Price (boerse-frankfurt.de)