Ajax duplicate alert will show a warning if a duplicate entry is added to the Title, Address, Phone or E-mail fields. You can choose to show the warning on one or more of those fields with settings for each Custom Post Type.
Keep your database clean and free from duplicate or degraded entries with the Ajax Duplicate Alert add-on for GeoDirectory.
With the add-on activated, GeoDirectory will check new entry titles in real time against those titles already in the database. If there’s a match, the user will be alerted to the duplicate and prompted to check the existing entry before proceeding.
Check to be sure you have the following plugins installed before you get started.