Journal Entries are usually used by accountants to work directly with the General Ledger to create both Debit and Credit entries for unique financial transactions. Some types include misc. expense, salary, rent etc. Journal entries are recorded in chronological order.
In Axanta, a Partner can be a customer or a vendor. If a Partner is selected in a Journal Entry with "Receivable or Payable" account, then the balances of the Customer/Vendor will be updated and also reflect on the partner statement accordingly.
Amount to be specified in currency other than base currency. If amount is to be credited then enter it with negative sign(-). Not that if you are dealing in a currency other than base then only Amount Currency to be used else leave it blank.