---
title: "Bookings accepted inside the advance-notice window"
description: "A guest can complete a booking for dates inside your advance-notice window, even though the calendar shows those dates as greyed out. **Why this…"
url: "https://homerunner.io/docs/why-can-a-guest-still-complete-a-booking-inside-the-advance-notice-window-even-t/"
updated: "2026-10-26"
category: Booking engine and checkout
---

# Bookings accepted inside the advance-notice window

A guest can complete a booking for dates inside your advance-notice window, even though the calendar shows those dates as greyed out.

**Why this happens.** Two separate settings control this behavior, and they operate independently. The HomeRunner Toolkit **Advance Notice Blocking** module controls which dates the calendar greys out and the hover message guests see. Checkout validation is controlled by a different setting: **HomeRunner > Settings > Property settings > Validate advance booking hours**. If that value is set to fewer hours than the calendar window, checkout accepts reservations that the calendar would not let a guest select. For example, if the calendar module is set to 168 hours (7 days) but the plugin validate setting is 48 hours, the effective checkout boundary is 48 hours.

**What you can do.** Set both values to the same number of hours so the calendar and checkout agree.

Still stuck? [Contact the HomeRunner team](https://homerunner.io/contact/) with your site address and what you tried, and we take it from there.