Supplier Support

TWG Distribution Centre Bookings System (C3 Reservations)

The Warehouse Group uses C3 Reservations, an online booking system that enables suppliers and carriers to initiate their delivery schedule bookings to our distribution centres.

The booking system helps organise booking requests based on dock availability. It automates communication with all partners in the supply chain. It allows for performance measurement, including delivery in full and on time (DIFOT) as part of suppliers' key performance indicators (KPI).

Suppliers and carriers can create DC delivery bookings, choose available time slots, and get instant booking confirmations. This automation eliminates sending emails or making phone calls to coordinate bookings.
New suppliers and carriers delivering to our distribution centres will receive their C3 user account linked to their C3 company account. This will enable them to edit their bookings and create new users within their company account as needed.

Watch the tutorial video below to learn how to book a delivery using C3 reservations and gain useful tips.

Getting started

C3 introduction
Technical requirements
Logging in and out process
Display options
Home page overview
Purchase orders view
Search options

Requesting an appointment

Create a booking reservation
Amending or cancelling a reservation

Booking amendments

Amending an appointment
Reschedule a booking

C3 account management

Set up C3 account users
Edit or delete users
Supplier Engagement support

C3 Booking Tool User Guide

For more information about C3 Reservations, download the C3 booking tool user guide here

2025 TWG Local Booking and Delivery Guide

TWG Local Delivery Guidelines

Would you like more guidance on the tool? Read our FAQs below or email [email protected].

Frequently Asked Questions

Error Messages and Booking Restrictions

Q: Why do I receive an error message when making a booking for tomorrow?
A: Our system locks the next day's shift from 3 p.m. the previous day to enable our operations team to prepare for the following day's deliveries. For urgent bookings, you may contact [email protected].

C3 Reservations Booking Process Q: What is the difference between "Preparing" and "Requesting" a booking? A: "Preparing" a booking allows suppliers to workflow the delivery to their preferred carrier to confirm the booking details. In contrast, "Requesting" a booking enables both suppliers and carriers to make a booking when the date and time options are known.

Purchase Order Visibility

Q: Why can't I see my supplier's purchase order?
A: Some purchase orders require the carrier name to be input in the PO form for visibility. Additionally, some suppliers have a rule set up to automatically push purchase orders because there is only one carrier tagged to them. If you can't find the PO you need to book, please reach out to your supplier engagement team.

Courier Bookings

Q: Why can't I see a courier option in the POs tab?
A: Courier bookings can be made using the "New Reservations" button. Please note that these bookings are not tied to system-generated purchase orders.

Limited Availability

Q: What does it mean if there is limited availability in the booking slots?
A: Limited availability indicates that the Delivery Centre (DC) has reached near-capacity for that day, restricting the number of bookings that can be accommodated. If you successfully book a limited availability slot, our Supplier Engagement Team will review your request. You will receive a notification regardless of whether your booking is approved or rejected, and if necessary, you will need to select an alternative time slot/date.

South Island DC Courier Deliveries

Q: What are the best time slots for courier deliveries to the South Island DC?
A: The South Island DC accepts courier bookings between 1 pm and 2:30 pm on weekdays.

Requested Delivery Date

Q: Can I schedule my delivery earlier or later than the delivery date?
A: When you make a booking, pay attention to the Requested Date of Delivery (RDD). This date shows when you want the Purchase Order (PO) to arrive. Make sure to book the PO for the RDD to avoid problems. Booking too early can cause issues at our Distribution Centres. Booking after the RDD can also create problems and will be counted as a delivery service failure. These failures will affect the Delivery in Full-on-time (DIFOT) performance of both the supplier and the carrier. To avoid any disruptions, always align your bookings with the RDD.