Sometimes the information EndNote has saved about an item is incomplete or incorrect. To check to see if EndNote can fix this,
Highlight and right click on a reference (or on multiple references), and choose “find reference updates.”
EndNote will show you two records side by side. The one on the left includes the available updates, and the one on the right is the reference saved in your library. Any differences are highlighted in blue. You can choose to “update all fields,” “update empty fields,” or simply type in or copy/paste specific fields.
Click “save updates” when you are done, or click “skip” to not make any updates or changes.