if ( ! empty( $items['create'] ) ) {
    $total += count( $items['create'] );
}

if ( ! empty( $items['update'] ) ) {
    $total += count( $items['update'] );
}

if ( ! empty( $items['delete'] ) ) {
    $total += count( $items['delete'] );
}

if ( $total > $limit ) {
/* translators: %s: items limit */
    return new WP_Error( 'woocommerce_rest_request_entity_too_large', sprintf( __( 'Unable to accept more than %s items for this request.', 'woocommerce' ), $limit ), array( 'status' => 413 ) );
}

return true;