Edit file File name : redirect-uniqueness-validation.php Content :<?php /** * WPSEO Premium plugin file. * * @package WPSEO\Premium\Classes\Redirect\Validation */ /** * Validates the uniqueness of a redirect. */ class WPSEO_Redirect_Uniqueness_Validation extends WPSEO_Redirect_Abstract_Validation { /** * Validates if the redirect already exists as a redirect. * * @param WPSEO_Redirect $redirect The redirect to validate. * @param WPSEO_Redirect|null $old_redirect The old redirect to compare. * @param array|null $redirects Array with redirect to validate against. * * @return bool */ public function run( WPSEO_Redirect $redirect, ?WPSEO_Redirect $old_redirect = null, ?array $redirects = null ) { // Remove uniqueness validation when old origin is the same as the current one. if ( is_a( $old_redirect, 'WPSEO_Redirect' ) && $redirect->get_origin() === $old_redirect->get_origin() ) { return true; } if ( array_key_exists( $redirect->get_origin(), $redirects ) ) { $this->set_error( new WPSEO_Validation_Error( __( 'The old URL already exists as a redirect.', 'wordpress-seo-premium' ), 'origin' ) ); return false; } return true; } } Save