AppendAccounts safely adds to bank account slice.

GetBankAccountByID Returns a bank account based on its ID.

SetAccounts safely overwrites bank account slice.

ErrAccountCannotBeEmpty message to return when bank account number is empty.

ErrBankAccountDisabled message to return when bank account is disabled.

ErrBankAccountNotFound message to return when bank account was not found.

ErrBSBRequiredForAUD message to return when currency is AUD but no bsb is set.

ErrCurrencyNotSupportedByAccount message to return when the requested currency is not supported by the bank account.

ErrIBANSwiftNotSet message to return when no iban or swift value set.

Account holds differing bank account details by supported funding currency.