---
title: "Retainage amount is wrong on an exported project invoice"
slug: "correct-the-retainage-amount-on-an-invoice-for-a-project"
updated: 2026-10-15T02:15:53Z
published: 2026-10-15T02:15:53Z
canonical: "help.servicetitan.com/correct-the-retainage-amount-on-an-invoice-for-a-project"
---

> ## 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.

# Retainage amount is wrong on an exported project invoice

![](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/anvil-wrench.png?sv=2026-02-06&spr=https&st=2026-11-01T22%3A02%3A24Z&se=2026-11-01T23%3A02%3A24Z&sr=c&sp=r&sig=H4eoxDWqrCYH%2FqjmHKYuIhFl2dRktdviZ89ouo6ih8s%3D) Troubleshooting **Role:** Administrator · Bookkeeper · Office Admin · Accountant**Area:** Progress Billing · Projects · Retainage · All versions

> [!NOTE]
> **Before you start:** You need the **Add adjustment invoice** permission to create adjustment invoices. If you don't have it, contact your admin.

## **What you're seeing**

The retainage amount on a project invoice is incorrect. Because the invoice was already exported, you can't change the retainage on it directly.

## **Why this happens**

**Reason 1**

**Exported invoices are locked, so retainage is corrected on an adjustment invoice.** Once an invoice is exported, its details — including retainage — can't be edited on the invoice directly. To correct the retainage, you record the correction on an adjustment invoice instead.

## **How to fix it**

### **1****Create an adjustment invoice that carries the corrected retainage**

1. Search for and go to the invoice.
2. Create an adjustment invoice. See the linked how-to for the exact steps.
3. Add a **retainage task** to the adjustment invoice.
4. Calculate the correct retainage amount.
5. Enter the calculated retainage amount in the **retainage task**.
6. Save the adjustment invoice.

> [!NOTE]
> **Note:** Correcting retainage through an adjustment invoice updates the project balance and retainage accounting, but the displayed Total on the original exported invoice may not change.

> [!NOTE]
> **✓ Done ·** The adjustment invoice records the corrected retainage, and the project's retainage reflects the right amount.

## **Still not working?**

Contact ServiceTitan Technical Support at [**go.servicetitan.com/ask**](https://go.servicetitan.com/ask) with:

- The project number and the invoice with the incorrect retainage
- The retainage amount currently shown and the correct amount
- Confirmation that the original invoice was already exported
- Which steps from this article you already tried

## **Want to learn more?**

[**Create an adjustment invoice ›**](https://help.servicetitan.com/roofing/docs/create-an-adjustment-invoice) Step-by-step how-to for creating the adjustment invoice referenced in the fix above.

[**Progress billing overview and setup ›**](https://help.servicetitan.com/roofing/docs/progress-billing-overview-and-setup) Background on progress billing and retainage configuration for projects.