---
title: "Prepare dunning letters by customer"
description: "Note Before you start preparing dunning letters, make sure that customers do not have open payments, prepayments and credit notes that can be applied against outstanding documents."
lang: en
languages:
  en: https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/manage-dunning-letters/prepare-dunning-letters-by-customer/index.md
lastmod: 2026-02-19
---

> Documentation index: https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/manage-dunning-letters/llms.txt


# Prepare dunning letters by customer

Last modified February 19, 2026

> Note Before you start preparing dunning letters, make sure that customers do not have open payments, prepayments and credit notes that can be applied against outstanding documents.


## Before you start

For all customers, the dunning process checks customers' due documents and gives you the ability to prepare and send dunning letters of different severity levels.

The system groups overdue documents by customer when it prepares dunning letters. See: [Make overdue and dunning settings in the Customer ledger preferences](https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/customer-ledger-preferences/make-overdue-and-dunning-settings-in-the-customer-ledger-preferences/index.md).

> [!NOTE]
> Before you start preparing dunning letters, make sure that customers do not have open payments, prepayments and credit notes that can be applied against outstanding documents.

1. Go to the [Prepare dunning letters (AR521000)](https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/customer-ledger-windows/prepare-dunning-letters-ar521000/index.md) window.
1. Optional: Select a **customer class**.
1. Optional: Select a **customer**.
1. In the table, select the customer you want to prepare dunning letters for.
1. Click **Process** or **Process all**.

## What is next?

To print or email the reviewed and released dunning letters, go to the **Print/release dunning letters** window.

<h2>Related pages</h2><h3>Concepts</h3>
<ul><li><a href="/visma-net-erp/help/customer-ledger/manage-dunning-letters/about-dunning-process-by-customer/index.md">About dunning process by customer</a></li><li><a href="/visma-net-erp/help/customer-ledger/manage-dunning-letters/about-dunning-process-by-document/index.md">About dunning process by document</a></li>
</ul><h3>Tasks</h3>
<ul><li><a href="/visma-net-erp/help/customer-ledger/manage-dunning-letters/prepare-dunning-letters-by-document/index.md">Prepare dunning letters by document</a></li><li><a href="/visma-net-erp/help/customer-ledger/manage-dunning-letters/set-up-the-dunning-process/index.md">Set up the dunning process</a></li><li><a href="/visma-net-erp/help/customer-ledger/manage-dunning-letters/set-up-a-dunning-letter-mailing/index.md">Set up a dunning letter mailing</a></li>
</ul><h3>Windows</h3>
<ul><li><a href="/visma-net-erp/help/customer-ledger/customer-ledger-windows/prepare-dunning-letters-ar521000/index.md">Prepare dunning letters (AR521000)</a></li><li><a href="/visma-net-erp/help/customer-ledger/customer-ledger-windows/print-release-dunning-letters-ar522000/index.md">Print/release dunning letters (AR522000)</a></li>
</ul>


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