---
title: "Technicians unable to add line items to POs on jobs in ServiceTitan Mobile"
slug: "techs-unable-to-add-line-items-to-pos-on-jobs-in-st-mobile"
updated: 2026-10-15T00:49:22Z
published: 2026-10-15T00:49:22Z
canonical: "help.servicetitan.com/techs-unable-to-add-line-items-to-pos-on-jobs-in-st-mobile"
---

> ## 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.

# Technicians unable to add line items to POs on jobs in ServiceTitan Mobile

## Problem

Technicians are unable to add line items to POs on jobs in the mobile app.

## Solution

### Technicians unable to add line items to POs on jobs in the mobile app

Follow these steps to ensure your device and app are up to date. This can help fix issues with adding line items to POs in the ServiceTitan mobile app.

1. Check the operating system (OS) of the device. Make sure it is up to date. Go to your device's settings to find the update option. If an update is available, follow the prompts to install it.
2. Uninstall the ServiceTitan mobile app. Press and hold the app icon on your device's home screen. Select the option to uninstall or delete the app.
3. Reinstall the ServiceTitan mobile app. Go to the App Store (for iOS devices) or Google Play Store (for Android devices). Search for the ServiceTitan mobile app. Download and install it.
4. Open the ServiceTitan mobile app. Log in with your credentials.
5. Try to add a line item to a PO on a job. Check if the issue persists.