Reversing Entry & Reversing date - When ticked and date is filled AX creates additional voucher for reversal in the same journal.
This is useful when your are passing period-end provisional voucher which needs to be reversed in next period.
Reverse Transaction - When clicked this will also reverse the voucher on given date.
This is used, when any transactions is incorrectly passed and after posting it is realized, then you can reverse entry/ transaction/ voucher at click of a button.
Load Ledger Transactions - This helps in creating vouchers in bulk for any purpose. take a scenario where 100 vouchers are there in Journal and after posting it is realized all voucher needs to be reversed. In this scenario huge effort is needed to reverse 100 vouchers. Some vouchers may not be reversible e.g. Bank, Project etc.
Then this option would be useful to reverse all vouchers