Hook um_get_custom_field_array

um_get_custom_field_array.php

<?php

/**
 * Hook: um_get_custom_field_array
 *
 * Type: filter
 *
 * Description: Extend custom field data on submit form error.
 * Used in the core to validate fields with conditional logic.
 *
 * @example https://github.com/ultimatemember/ultimatemember/blob/master/includes/core/um-actions-form.php#L517
 * @link    https://docs.ultimatemember.com/article/1140-umgetcustomfieldarray
 *
 * @package um\core
 * @see     um_submit_form_errors_hook_()
 * @see     um_get_custom_field_array()
 * @since   2.0
 * @version 3.0
 *
 * @param array $field  Field data.
 * @param array $fields All fields.
 *
 * @return array Field data.
 */
function my_get_custom_field_array( $field, $fields ) {
	// your code here.
	return $field;
}
add_filter( 'um_get_custom_field_array', 'my_get_custom_field_array', 10, 2 );