Check for duplicates

I have a question, is there a way to check for duplicates after let's say, 300 people all enter thier information.

Hi,

You may use our search bar to check for duplicates.

However, since this task is quite tedious, you can also download your submissions as an Excel file and find and highlight the duplicates. Please refer to the guides I have provided below.

Guides:

https://www.jotform.com/help/73-how-to-download-form-submissions-as-excel-csv-pdf

https://www.excel-easy.com/examples/find-duplicates.html

We currently don't have a feature that allows you to prevent duplicate submissions based on submissions data present in your account. However, you can use the Unique Question or the Unique Submission option to prevent duplicate submission on a specific form. 

Let us know if you need further assistance. Thank you.