The Excel formula `I_EOL_GLTXNH_JOURNAL_CODE` retrieves the journal code of the first matching financial transaction from Exact Online. Parameters: - `divisionCode`: division code. - `entryFrom`: entry number from. - `entryTo`: entry number to. - `transactionDateFrom`: transaction date from. - `transactionDateTo`: transaction date to. - `journalCode`: journal code. - `journalType`: journal type. - `transactionType`: transaction type. Returns: journal code of the first matching financial transaction.