Be aware that annotations/notes added to PDFs in EndNote are only visible within the EndNote program.
The Find Full Text command makes it possible to find the matching pdfs for references in your Endnote library. You can search for up to 250 records at a time.
Endnote will only be able to locate PDFs with a DOI (and even then, not all will automatically attach). Other PDFs will need to be downloaded and attached manually.
8. After configuring the preferences, you will need to authenticate with SCU once before it will work.
NOTE: you may need to periodically re-authenticate if you find PDFs aren't being attached. This may be because the connection has been reset to the OpenURL server.
The following short videos from Clarivate demonstrate the Find Full text functionality, how to set find full text preferences, and how to annotate PDF files in EndNote 20, and set up PDF auto imports.