How do I speed up checking of unique identifier to prevent duplicate record saving/error

Hi, I've already put unique identifier in a text field. Is there anyway for quick checking that the unique identifier is indeed unique before proceeding with registration. The whole registration process takes long time. An early indication of duplicate record already saved is much appreciated.

May we know what form you are referring to? I checked the form titled "Company Form: Service Fees Claim" because it's the latest form that has the Unique ID widget which is named "Claim Ref. Number":

It is highly unlikely that a duplicate unique ID will be created, unless you manually changed the current index of the widget without considering the existing submissions. This is because the unique ID widget generates the value or increments the ID once the form is submitted. So even if the users are taking time to complete your form, the unique ID is not yet generated, it will only assign a unique ID once the submit button is hit and it is saved in our servers.

Here's a guide to learn more about setting up a unique ID on your submission: https://www.jotform.com/help/79-How-to-Add-Custom-Unique-IDs-to-your-Form-Submissions 

I hope that helps.