---
title: "Unable to Map Business Units to a QuickBooks File"
slug: "unable-to-map-business-units-to-a-quickbooks-file"
updated: 2026-10-15T02:41:13Z
published: 2026-10-15T02:41:13Z
canonical: "help.servicetitan.com/unable-to-map-business-units-to-a-quickbooks-file"
---

> ## 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.

# Unable to Map Business Units to a QuickBooks File

## Problem

Your QuickBooks file was corrupted and you created a new one, but your business units are still mapped to the old file, making them unavailable to connect in the new file.

## Solution

Business units cannot be mapped to multiple QuickBooks files. Remove the business units from the old QuickBooks file before deactivating it and the re-map them to the new QuickBooks file.

1. Make sure you have ServiceTitan Web Connector and QuickBooks Desktop open.
2. On the navigation bar, go to **Settings > QuickBooks Desktop.**
3. Click on the old QuickBooks file that is causing the issue.
4. Remove the business units from the old file.
5. Click **Deactivate**.
6. Go to the new QuickBooks file.
7. On the *Business Units Assigned* row, click **Edit**.
8. Map the business units to the new file.