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

# Combined invoice: a reservation is missing from a grouped invoice

> How to add a reservation that was left out when issuing a monthly combined invoice for a company or agency.

## What a combined invoice is

Some companies and agencies agree on **a single monthly invoice** grouping all their guests' reservations for that month. It's common with corporates, travel agencies, and inbound operators.

When you issue the grouped invoice for February to company X, Roomdoo gathers every reservation that has that company set as billable customer. Sometimes a reservation gets left out because:

* **Billable customer set wrong**: the reservation was created with the guest as billable, not the company
* **Reservation added late**: it came in after the combined invoice was generated
* **Date change** that pushed the reservation out of the invoiced month's range
* **Month cut-off bug**: in rare cases, a reservation on the last day of the month isn't included

## How to add it to an already issued invoice

**You can't do it from the Roomdoo app.** Modifying an already issued combined invoice requires:

1. Correcting the invoice to include the missing reservation
2. Linking the reservation to the billable folio
3. Preserving accounting traceability and, if applicable, re-sending to VeriFactu

That's why it's always handled by support to support.

## Before contacting support, check

<Steps>
  <Step title="Does the reservation have the company as billable customer?">
    Open the reservation → Reservation tab → Details → Billable customer. If it shows the guest's name instead of the company, that's where the issue started.
  </Step>

  <Step title="Do the dates fall in the right month?">
    Check that check-in (or check-out, depending on policy) is within the invoiced range. If it's right at the boundary, it could be a month cut-off case.
  </Step>

  <Step title="Is the company correctly identified?">
    Sometimes the billable customer exists as two contacts (one with tax ID, one without). Check the reservation points to the canonical company contact.
  </Step>
</Steps>

## What to send to support

When you contact support, include:

* **Booking reference** of the missing reservation
* **Number** of the combined invoice already issued
* **Name or tax ID** of the company/agency
* **Invoiced month**
* **Result of your prior checks** (billable customer set right or wrong, etc.)

## When to contact support

**Always.** It's an accounting operation that affects an already validated invoice and needs a corrective.

<Warning>
  Don't issue a separate invoice for the forgotten reservation without telling us. The company may record the expense twice or demand a re-invoice. Better to add it to the original combined invoice via a corrective.
</Warning>