The ActivatePro event feed can handle two types of files: Event History and Order History.
In the Order History file, you can upload a list of your orders, while the event history file can also contain more details about other events.
Note: Event feed uploads are limited in size to 100,000 lines (approximately 35MB).
In order to expedite the uploading process, it is possible to upload multiple event feed files simultaneously, provided that the files have different timestamps.
If you want to use this functionality and it is not ccconfigured yet, please contact the ActivatePro support team via ticket.