The Archives Transfer Tool is a web-based tool transfer app for donors to transfer digital material (often for MIT community groups and members). A transfer will most likely have been set up by the Collections Team and the digital archivist and the files can be found in the "erst" folder of the submission drive. These instructions explain how to confirm the transfer and get it ready for processing.
If you have received a transfer from the archives transfer tool, it will already be in the erst folder in the submission drive within a folder by group or individual name.