The API endpoint providing a list of FIAT buys (sapi/v1/fiat/payments with transactionType set to 0) returns both direct credit card purchases and buys made via ‘Buy with Cash Balance’ (Kupuj i sprzedawaj kryptowaluty | Binance).
It would be very helpful to somehow distinguish the purchase type by adding an additional object property so it is clear how exactly a given purchase was made.
If a transaction was made using a credit card then I can tell that my current wallet FIAT balance remains the same. If it’s made using a cash balance I can tell that my FIAT balance becomes lower after the transaction.