This project is not covered by Drupal’s security advisory policy.

This module is a lightweight alternative to the Unique Field module.

Unique Multivalue Field does nothing more than its name suggests: If you configure a field to be of multiple cardinality, with this module you can prevent the same value to be entered twice within the same field.
Ensuring this is implemented through a validation constraint coming from Symfony.

Note: This module will be abandoned as soon as the Unique Field module has a stable 8.x release.

Supporting organizations: 

Project information

Releases