The Acumulus plugin connects your OpenCart store to the Dutch SIEL Acumulus online financial administration application. It can add your invoices automatically or via a batch send form to your administration, saving you a lot of manual, error prone work.
The Acumulus plugin:
* Reacts to order status changes via events.
* Does have 3 admin screens: a settings, advanced settings, and a batch send screen.
* Does not in any way interfere with the front-end UI.