Insert new CCT item with JetFormBuilder only if similar item not exists

validate-cct-item.php

<?php
/**
 * 1. Add action Hook before Insert/update CCT, set 'validate-cct' as hook name - https://i.imgur.com/48wcTA4.png
 * 2. Replace 'tournaments' with your actual CCT slug
 * 3. Replace 'name' with actual parameters to find similar items
 */
add_filter( 'jet-form-builder/custom-filter/validate-cct', function( $result, $request, $action ) {

	$cct_slug = 'tournaments';
	$cct      = \Jet_Engine\Modules\Custom_Content_Types\Module::instance()->manager->get_content_types( $cct_slug );
	
	if ( $cct ) {
		/**
		 * 'name' - its CCT field to find similar items by
		 * $request['name'] - its a form field with value to write into appropriate CCT field
		 * you need to replace this data with your actual settings
		 * also you can add more paramters to search for similar items
		 */
		$exists = $cct->db->query( [ 'name' => $request['name'] ] );
		if ( ! empty( $exists ) ) {
			$result = false;
			throw new \Jet_Form_Builder\Exceptions\Action_Exception( 'This item already added', 'exists' );
		}
	}

	return $result;
}, 10, 3 );

Hi @MjHead it work perfect !!! Thanks.

Can you share this validation for CPT instead CCT ?

Thanks in advance.