EndNote21 Desktop: 6. Remove Duplicate References

If you are doing a literature review, you'll want to make sure you aren't assessing duplicate copies of the same article. EndNote has a feature that helps you identify and remove duplicate copies. 

To remove duplicate references:

1. In the Groups panel in the left column, click on All References to display all the references in your library.
2. From the menu bar, select Library > Find Duplicates.
   
    
3. If you have duplicate references in your library, the Find Duplicates dialog box will appear.  For each set of duplicates, you have the following options:

• Click Keep This Record to save the preferred reference and discard the other in the trash.
• Click Skip to leave both references in the library. The references will be placed in a temporary Duplicate References group for later review.​​​​​​​

Edit how to identify duplicates

• You can edit the fields that EndNote considers to identify duplicates. 
• Click Edit > Preferences > Duplicates 
• Select the fields you want EndNote to consider
• Select Apply then find duplicates using the steps above