Allegro REST API - price update

I need an application that will enable mass updating of Allegro offers prices. As of today, we have 15 accounts with ~ 30,000. auction. This number will probably increase. The auctions correspond to the products in XML files in the Ceneo format. These files are refreshed every 3 hours. Several XML files are attached to each account - due to several different warehouses. Of course, we have information about the auctions and the corresponding XML files. So isolating them won't be a problem. Summarizing the process: 1. We export files separately for each Allegro account, e.g. csv with columns: - auction number - some xml file identification number from which prices are to be downloaded 2. On the basis of the aforementioned file, the application updates prices from individual xml files. I would like to be able to add another Allegro account and another XML file to the application if necessary. The application can be run manually - it does not have to be launched periodically.