> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://faq.cteleport.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Customer invoicing procedures - FAQ

###### Should I include a payment specification when paying an invoice?
It depends on your payment:
* If you're consolidating payments for multiple invoices into one transaction, please include invoice numbers in the payment description.
* If you are settling a large number of invoices and there isn't enough space to list all invoice numbers, send the payment specification to [accounting@cteleport.com](mailto:accounting@cteleport.com), to ensure proper allocation.
* Providing full invoice numbers in the payment description enables automatic matching, eliminating the need for a specification. This automated process is more efficient, saving time compared to manual matching.

###### When will I receive invoices?
If paying via bank transfer, invoices are sent weekly on the same day by default.

###### What is included in invoices?
Only issued tickets are invoiced. Reservations without issued tickets are excluded.

**Extra services in invoices:**
* If an extra service is booked together with the ticket, it will be issued in the same invoice.
* If an extra service is booked after the flight reservation is made but before it is invoiced, it will be invoiced in the same invoice. 
* If an extra service is booked after the flight reservation is made and invoiced, it will be sent in a separate invoice.

###### How to group flights in invoices?
Flight can be grouped in invoices by:
* Booking: One booking per invoice.
* Booker and vessel combination: All bookings of vessel A by booker D in one invoice.
* Vessel: All vessel B bookings in one invoice.
* Company: All company C bookings in one invoice.
* Custom invoicing field: All bookings with custom field D in one invoice.

###### Can I change the day I receive the invoices?
Yes, you can request changes through customer support via chat or by emailing [support@cteleport.com](mailto:support@cteleport.com).