Why does it say “rule already exists “ when manually categorizing a trip for mileage? Surely if the rule existed I wouldn’t have to manually categorize it.

Let's work through troubleshooting your QuickBooks Self-Employed (QBSE) mobile app to ensure you can manually categorize your trips for accurate mileage tracking, Victor.

Accumulated data on your device may affect its functionality. To reset it while keeping your app's documents and data, please follow these steps:

For iOS:

1. Go to Settings, then tap General.
2. Select iPhone Storage, then click the QBSE app.
3. Tap Offload App.

For Android:

1. Open your device Settings.
2. select Apps 
3. Choose QuickBooks app from the list, then select Storage.
4. Select clear data.

I'll also provide this article for more detailed information on getting your trips from Google Timeline: Import Google Timeline trips into QuickBooks Self-Employed.

Keep us posted if you need further assistance regarding mileage tracking. This forum is open 24/7 and ready to assist when you need help.