---
title: "Update materials on an exported invoice"
slug: "update-materials-on-an-exported-invoice"
updated: 2026-03-27T18:25:52Z
published: 2026-03-27T18:25:52Z
canonical: "help.servicetitan.com/update-materials-on-an-exported-invoice"
---

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

# Update materials on an exported invoice

## Overview

ServiceTitan allows you to edit and update materials on invoices that are already exported.

---

### 

#### Who uses this feature

- Administrators, office employees, managers, accountants, and bookkeepers
- Applies to all business types
- Applies to all trades

#### Feature configuration

- Account configuration is required to use this feature. Please contact [Technical Support](http://go.servicetitan.com/ask) for details.
- [Accounting permissions](/v1/docs/send-customer-statements#set-up-permissions) are required to use this feature. Please contact the account administrator on your team.

## Things to know

- You can add inventory materials with negative quantity if the *Enable Negative Quantity* configuration is selected in **Settings > Inventory > Configuration**.

## Remove materials from an invoice

1. In the navigation bar, click **Search**.
2. Click the dropdown and select *Invoice*. ![Search dropdown menu highlighting the 'Invoice' option among other selections.](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/update-materials-on-an-exported-invoice-image-8kd0cj3r.png)
3. Select the invoice that you want to update.
4. Click **Add an adjustment Invoice**. ![](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/update-materials-on-an-exported-invoice-image-grncpcue.png)
5. Add the same material with a negative quantity.

The material is removed from the exported invoice and the inventory levels are adjusted accordingly.

## Return materials

1. Go to the navigation bar and click **Inventory**.
2. Go to **Returns**. ![Inventory section highlighting the 'Returns' option under the purchase category.](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/update-materials-on-an-exported-invoice-image-jorqke60.png)
3. Click **Create**. ![Returns management interface displaying vendor return details and options for creating returns.](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/update-materials-on-an-exported-invoice-image-5qhk6di1.png) The *Create Return* screen opens. ![Form for creating a return with fields for details and item list.](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/update-materials-on-an-exported-invoice-image-y72htptb.png)
4. Fill in the fields.

> [!NOTE]
> **Note:** You should add the same material with a positive quantity.
5. When you’re done, click **Save**.

## Want to learn more?

- See [Create an adjustment invoice](/v1/docs/create-an-adjustment-invoice)
- See [Edit an invoice](/v1/docs/edit-an-invoice)