Screen24 sells screen advertisement and offers sales provisions for its partners. Thereby locations and resellers may get different provision models. JOSHMARTIN was asked to implement a small Phoenix framework that synchronizes all according transactions with Bexio for bookkeeping. In addition, we needed to ensure the possibility to generate reports in consideration of varoius filters and download them as .csv files. The integration was implemented with a Phoenix framework and Elixir via Bexio API.