This is a light weight module which helps site admin to restrict the term names with blacklisted characters/words, character length, word count and unique name. You can also add additional restricts new terms creation through term reference, based on settings.

It also handles the validation of term names that are attached to the fields, lets say, the term names that are created through the taxonomy reference, autocomplete widget.

Validating the term name by

Special characters/Words blacklist
Length (optionally specify min and / or max length)
Unique term names (for specific vocabulary)

* This module works with Autocomplete Deluxe module

INSTALLATION

* Install as you would normally install a contributed Drupal module. See:
https://drupal.org/documentation/install/modules-themes/modules-7
for further information.

CONFIGURATION

* Configure user permissions in Administration » People » Permissions:
Term Name validation admin control.

* Configure Term Name Validation in Modules » Configure
admin/config/taxonomy/term-name-validation. Image

* Configure Term Name Validation for a Taxonomy reference field in the
field settings (autocomplete - this is the case where new terms will be
created if it is not already existing.). Image

To submit bug reports and feature suggestions, or to track changes:
https://www.drupal.org/project/issues/term_name_validation

List of features fixed :

Credits

Valuebound

RTBC issues for Term name validation

Filters