Accurately speaking, the "fund account number" in the bank should be called "fund trading account number", which is a bank account used for fund trading.
Fund companies will also give customers an account, also called "fund account number" here. For example, if you call the customer service center of a fund company, they will ask you to provide the fund account number, which sometimes coincides with the ta account number of the fund company.
2. The scientific name of the 2.ta account is "registered account number", which is about the account number of the fund product.
When there are only open-end fund products, the customer has only one ta account in the fund company. But now there are many kinds of fund products, and the ta accounts of etf and lof funds are different from ordinary open-end funds. These accounts are because this kind of products should be registered in the stock exchange, so all registered accounts of the stock exchange should be used. So now a customer will have multiple ta accounts in a fund company.