@Nirus - So Yahoo is the only default Historical Quotes Quote Feed Provider. After selecting Yahoo and XXX (Australian Stock Exchange (ASX)) the security code has a “.AX” appended to the symbol shown in Screen 2. This is the nonsense ticker code I referred to. It is not recognised when the dividends just have the three (or four)-character security code (symbol). (That’s why I’ve suggested “.AX” should be a different field.)
In Reporting Across Multiple Security Accounts - #6 by flywire the Yahoo exchange code had to be added to import DemoDistributionsMultiAcc.csv distributions. This issue wouldn’t be apparent with ISIN or WKN codes which I suspect Germans normally use.
I wouldn’t expect future buy/sell notices of the same security (with three (or four)-character security code) would work either.