RE: hello, how can I find a history of the payment journals posted so far?
depending on the used account type in the payment journal:
* for bank account: goto the used bank account, then to ledger entries, filter by document type=payment
* for g/l account: goto the chart of accounts, filter to the in the PJ used g/l account, goto ledger entries, filter by document type=payment
* you'll find also according vendor ledger entries for the payment lines.