Hook um_submit_form_errors_hook_

um_submit_form_errors_hook_.php

<?php

/**
 * Hook: um_submit_form_errors_hook_
 *
 * Type: action
 *
 * Description: Fires on the form validation.
 * Used in the core to process form errors.
 *
 * @example https://github.com/ultimatemember/ultimatemember/blob/master/includes/core/um-actions-form.php#L293
 * @link    https://docs.ultimatemember.com/article/1274-umsubmitformerrorshook
 *
 * @package um\core
 * @see     um_submit_form_errors_hook()
 * @see     um_submit_form_errors_hook_()
 * @since   2.0
 * @version 3.0
 *
 * @param array $args Form arguments.
 */
function my_submit_form_errors_hook_( $args ) {
	// your code here.
}
add_action( 'um_submit_form_errors_hook_', 'my_submit_form_errors_hook_', 10, 1 );