---
title: "Unable to Email Customer Invoice"
slug: "unable-to-email-customer-invoice"
updated: 2026-03-11T16:05:21Z
published: 2026-03-11T16:05:21Z
canonical: "help.servicetitan.com/unable-to-email-customer-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.

# Unable to Email Customer Invoice

## Problem

You are unable to email the customer an invoice and instead receive an application error message that says *Value must be positive. (Parameter 'count')*.

## Solution

1. In ServiceTitan, go to **Settings > Invoicing > Email**.
2. Click the **Invoice** tab.
3. In the **Body** field, check if there are two online payment links.
4. If there are two links, remove one of them.
5. Email the invoice again to the customer.