Agreemeent is a variable that appears in the Data Processing Agreement Cover Page.
Typically, DPAs are not standalone agreements. They work in conjunction with an underlying agreement, and this field allows you to identify it. Among Common Paper users, the Agreement is most frequently a Cloud Service Agreement (CSA).
The dropdown list will include agreements that you've sent from Common Paper and those that you've uploaded.
There's an additional option for linking a DPA with a CSA within Common Paper. You can upload a PDF of your DPA and then attach that to the CSA using the optional DPA variable.