---
title: "Validate customer data in the Customer list"
description: "Note You can select a customer in the table and click View customer to go to the Customers (AR303000) window and look at the details for a specific customer."
lang: en
languages:
  en: https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/customer-classes/validate-customer-data-in-the-customer-list/index.md
lastmod: 2026-02-23
---

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


# Validate customer data in the Customer list

Last modified February 23, 2026

> Note You can select a customer in the table and click View customer to go to the Customers (AR303000) window and look at the details for a specific customer.


You can make settings in the [Countries/counties/postcodes (CS20400S)](https://docs.vismasoftware.no/visma-net-erp/help/common-settings/common-settings-windows/countries-counties-postcodes-cs20400s/index.md) and [Customer classes (AR201000)](https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/customer-ledger-windows/customer-classes-ar201000/index.md) windows, so that the system validates the data that comes in via AutoInvoice to the [Customer list (AR40101S)](https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/customer-ledger-windows/customer-list-ar40101s/index.md). Fields that are missing information will be marked with ![icon-error-exclamation](https://docs.vismasoftware.no/media/visma-net-erp/icon-error-exclamation.png).

1. Go to the [Customer list (AR40101S)](https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/customer-ledger-windows/customer-list-ar40101s/index.md) window.
1. Select a **Customer class**.
1. Select a **Country**.
1. Select the correct check box for **AutoInvoice validation**.
1. The system validates the list of customers and the ![icon-error-exclamation](https://docs.vismasoftware.no/media/visma-net-erp/icon-error-exclamation.png) is displayed where information is missing for customers that have the option **Send to AutoInvoice** set.

> [!NOTE]
> You can select a customer in the table and click **View customer** to go to the [Customers (AR303000)](https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/customer-ledger-windows/customers-ar303000/index.md) window and look at the details for a specific customer.

<h2>Related pages</h2><h3>Windows</h3>
<ul><li><a href="/visma-net-erp/help/customer-ledger/customer-ledger-windows/customer-list-ar40101s/index.md">Customer list (AR40101S)</a></li>
</ul>


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[View this page](https://docs.vismasoftware.no/visma-net-erp/help/customer-ledger/customer-classes/validate-customer-data-in-the-customer-list/)