What's the flexfield for Lease Accounting Payment

Summary:

Can anyone help to indicate the flexfiled name or coding that can be setup at the FLA payment level?

Content (please ensure you mask any confidential information):

As I am trying to setup the DFF for FLA transaction detail, I find the flexfield available for items like the lease details, asset, milestone etc. But I couldn't find the DFF table for lease payment. However, there is an "Additional Information" section under the lease payment creation page (and the context segment box). So I assume there should be a payment DFF available. can someone help provide some insight on this? Much appreciated!