Options to Load AP Invoice Files from SFTP to Fusion Without OIC

One of the customers mentioned that the AP Invoice import process has not been working for the past few days. Since they are not using OIC, we are unsure which third-party tool is being used to pick up the files from SFTP and load them into Fusion — and the customer is also unaware of the details.

Could you please confirm if there is an alternative way to automate the process of picking up the AP Invoice files from SFTP, uploading them into UCM, and then triggering an ESS job (such as “Load Interface File for Import”) in Fusion to process the file from UCM, without using OIC?