---
title: "Why am I getting a session error when adding tickets to a booking?"
slug: "why-am-i-getting-a-session-error-when-adding-tickets-to-a-booking"
updated: 2026-06-16T17:27:41Z
published: 2026-06-16T17:27:41Z
canonical: "mysupport.roller.software/why-am-i-getting-a-session-error-when-adding-tickets-to-a-booking"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://mysupport.roller.software/llms.txt
> Use this file to discover all available pages before exploring further.

# Why am I getting a session error when adding tickets to a booking?

## Questions

- Why am I not able to add tickets to an existing booking?
- Why am I getting the error "Could not find session #" when adding tickets to an existing booking in Venue Manager?

## Solution

This error occurs if any product schedules that existed when the booking was originally made have since been changed. To resolve this:

1. From Venue Manager, [go to the booking](/v1/docs/search-for-bookings-guests-or-members-from-venue-manager).
2. [Remove all items](/v1/docs/edit-bookings-from-venue-manager) from the booking.
3. Save the booking.
4. [Re-add](/v1/docs/create-and-manage-bookings-from-venue-manager) all items back to the booking as intended.
5. Select **Save**.

## Related

- [Edit bookings from Venue Manager](/edit-bookings-from-venue-manager.md)
- [Why can't I edit or refund a booking in the past?](/why-can-t-i-edit-or-refund-a-booking-in-the-past.md)
- [Using till notes in POS](/using-till-notes-in-pos.md)
- [Get started with the activity center](/get-started-with-the-activity-center.md)
- [Why is a session pass not available in my online checkout?](/why-is-a-session-pass-not-available-in-my-online-checkout.md)