Enforce unique field values in miniExtensions form

This feature enforces uniqueness for a field value in miniExtensions form. For example, if you would like to disallow a registered user from signing up again, this extension will prevent having duplicated records.

In miniExtensions form, you have the option to set a field settings to require uniqueness. In which case, the field input value will be validated. If the new value does not exist already, the record will be created/updated. If it does exist, an error message will show to the user and the form will not get submitted.


  • Supported for the following field types: Single Line Text, URL, Email, Barcode, and Numbers.
  • Customizable error message when a duplicate record is found.


Here’s an example of a form that prevents you from using an existing username.

1. URL

2. Embed on your site

The form can be both shared as a URL or embedded in your website.

Use Cases

This extension can be useful in a lot of scenarios. You can use it to:

  • Prevent users from registering twice
  • Validate entries and stop duplicates

If you click on the sample view below, you’ll see the table that’s used for the demo above.


Supported features

Third Party Integration

Client Portal for Airtable (Search)

Share records with people without giving them full access to Airtable. Limit them to only see their records and allow them to update some parts of the records.


Most frequent questions and answers

You can use the subscription on different bases/accounts. It covers universal access to all of our extensions. All of our extensions can be setup for multiple bases and tables.

There’s no limit on the number of records you can process. Unlike Zapier and Integromat, our pricing is per month, not per record. However, there might be limitations by third party integrations. Also, some extensions can only run on one table at a time. Please refer to each extension’s page on whether or not it supports running on multiple tables simultaneously.

Yes. Submit your request here and we will get back to you as soon as we can.

Yes, you can schedule a call with us by going here.

Yes! Also, please note that we usually make updates when users request them. We try our best to make things work like expected.