---
title: "Updating an item from Non-Inventory type to Inventory-type: recommended workflow"
slug: "updating-an-item-from-non-inventory-type-to-inventory-type"
updated: 2026-10-15T00:48:09Z
published: 2026-10-15T00:48:09Z
canonical: "help.servicetitan.com/updating-an-item-from-non-inventory-type-to-inventory-type"
---

> ## 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.

# Updating an item from Non-Inventory type to Inventory-type: recommended workflow

The purpose of this document is to provide a proper workflow when attempting to change an item's type.

## Things to know

- The proper workflow for tracking Inventory is that the item/s should be newly created when attempting to use them as Inventory.
- Users who receive an error message "List Id is invalid" error message when exporting an invoice indicates that they recently switched a part from non-inventory → Inventory.

## Workflows

### Creating a New Inventory Part within ServiceTitan

To prevent any underlying issues, items that will be used as Inventory should be newly created within ServiceTitan.

To do that:

1. Click the **Pricebook** tab.
2. Add Material/Equipment.
3. Select the required fields and save.
4. After saving, you can now begin tracking this item as inventory. ![](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/updating-an-item-from-non-inventory-type-to-inventory-type-recommended-workflow-image-lk3lthzj.png?sv=2026-02-06&spr=https&st=2026-10-31T03%3A47%3A04Z&se=2026-10-31T04%3A47%3A04Z&sr=c&sp=r&sig=5kvTPcI9If5aNxhCBrFG6sbdcpsZYbkuqP%2Fon4go8VE%3D)

### Issues with changing a non-inventory part to inventory

Within ServiceTitan not all item fields are retroactively updated when a change is made in the pricebook. While this may seem like a product gap, it is actually intended to function this way to prevent any underlying issues. The implication of changing the tracking of an item would severely impact a user's inventory count which may have already been accounted for in previous periods.

Thus, when any material/equipment is placed on an invoice it is registered using the current setup of that item in Pricebook. (IsInventory=true; IsInventory=false)

![](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/updating-an-item-from-non-inventory-type-to-inventory-type-recommended-workflow-image-o69f6uuj.png?sv=2026-02-06&spr=https&st=2026-10-31T03%3A47%3A04Z&se=2026-10-31T04%3A47%3A04Z&sr=c&sp=r&sig=5kvTPcI9If5aNxhCBrFG6sbdcpsZYbkuqP%2Fon4go8VE%3D)

If these items have already been used before (exported to QB) then a "list ID is invalid" error will begin to occur when attempting export, since the item has already been created in QuickBooks/Intacct as a non-inventory item, and cannot be switched to inventory.

![](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/updating-an-item-from-non-inventory-type-to-inventory-type-recommended-workflow-image-gmqknaxd.png?sv=2026-02-06&spr=https&st=2026-10-31T03%3A47%3A04Z&se=2026-10-31T04%3A47%3A04Z&sr=c&sp=r&sig=5kvTPcI9If5aNxhCBrFG6sbdcpsZYbkuqP%2Fon4go8VE%3D)

The user would want to create a duplicate of this item, change the code so it differs from the original, remove the original from the invoice and re-add the new item to the invoice.

### Creating a duplicate item in ServiceTitan

1. Click the **Pricebook** tab.
2. Edit the item you want to make inventory.
3. At the top click **Duplicate**. ![](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/updating-an-item-from-non-inventory-type-to-inventory-type-recommended-workflow-image-1ogkgikt.png?sv=2026-02-06&spr=https&st=2026-10-31T03%3A47%3A04Z&se=2026-10-31T04%3A47%3A04Z&sr=c&sp=r&sig=5kvTPcI9If5aNxhCBrFG6sbdcpsZYbkuqP%2Fon4go8VE%3D)
4. The name will automatically add a (1) to the end which can be edited.
5. Click **Inventory Settings** and begin tracking the item as inventory.

### Related Content

- [Add materials to your pricebook](/construction/docs/add-materials-to-your-pricebook-1)