BuddyPress prevent duplicate Group Names

functions.php

/**
 * Create Shoebox - Check if Shoebox name already exists if does do not create duplicated shoebox.
 */
function dwply_check_group_name( $group_new ) {
	if ( 'group-details' == bp_get_groups_current_create_step() ) {
		$args = array( 
			'per_page'          => null, 
			'populate_extras'   => false, 
			'update_meta_cache' => false 	
		);
		
		$groups = groups_get_groups( $args );
		foreach ( $groups['groups'] as $group ) {
			if( $group->name == $group_new->name ) {
				$group_new->name = '';	
				dwply_group_name_error_message();
				break;	
			}
		}
	}
}
add_action( 'groups_group_before_save', 'dwply_check_group_name' );

/**
 * Create Shoebox - Duplicated Shoebox error message.
 */
function dwply_group_name_error_message() {
	global $l10n;
	$mo = new MO();

	$mo->add_entry(array(
		'singular' => 'That group name is already in use. Please try again.',
		'translations' => array(
			__('That name is already being used. Please use a different name.', 'Buddypress')
		)
	));
	if (isset($l10n['buddypress'])) $mo->merge_with($l10n['buddypress']);
	$l10n['buddypress'] = & $mo;
	unset($mo);
}