The “Exists in Submissions” custom validation in OpnForm has been expanded to work for most field types!

Now, you can prevent duplicate values across emails, numbers, URLs, select fields, multi-selects, dates, users, relations, and more — automatically keeping your form data clean, organized, and reliable.

You can also add custom messages to inform users when a value already exists.

📝 Supported Fields

You can apply this validation to most OpnForm field types:

• Title

• Email

• URL

• Phone number

• Rich Text

• Number

• Select

• Multi Select

• Status

• Date

• User

• Relation

⚠️ Note: Some complex fields like User or Relation may require linking to a database to validate properly.

Learn how to set it up here: How to Prevent Duplicate Submissions in OpnForm Using “Exists in Submissions” Validation?