---
title: "Exact period change blocked for Administrators - Payhawk Help Center"
slug: "failed-to-export-into-exact-online-change-of-period-is-not-allowed-for-the-expense"
description: "Fix the Change of period is not allowed error in Exact Online: change the Period-date check setting so Payhawk can update expenses that were already exported."
updated: 2026-10-21T10:25:18Z
published: 2026-10-21T10:25:18Z
canonical: "payhawk.com/failed-to-export-into-exact-online-change-of-period-is-not-allowed-for-the-expense"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://payhawk.com/help/llms.txt
> Use this file to discover all available pages before exploring further.

# Failed to export into Exact Online. Change of period is not allowed for the expense.

## Error message

```plaintext
Failed to export updated expense. Change of period is not allowed for the expense in Exact Online.
```

## Affected ERP integrations

- Exact Online

## Cause

This error occurs when you attempt to update the **Document Date** or **Service Period** for an expense in Payhawk that has already been exported to Exact Online, and your Exact Online account has the **Period-date** check setting configured as **Mandatory**.

When Payhawk tries to update the entry in Exact Online with the new dates, Exact Online's mandatory period-date check prevents any changes to the period, which causes the export update to fail.

## Solution

To resolve this issue:

1. Log in to your Exact Online account.
2. Navigate to **Master Data** > **Settings** > **Company** > **Financial** > **Dates**.
3. Locate the **Period-date check** setting.
4. If the setting is currently set to **Mandatory**:
  - Change the setting to a less restrictive option, such as **Warning** or **Off**, to allow period changes. This will enable Payhawk to update the expense dates in already-exported entries.
  - Keep the setting as **Mandatory** and avoid changing the **Document Date** or **Service Period** for expenses that have already been exported to Exact Online.
5. Click **Save**.

![Company settings page showing mandatory period-date check and various financial entries.](https://cdn.payhawk.com/Adm%3AIntegrations%3AError%20messages/exact_online_8.png)
6. Return to Payhawk and attempt to export the updated expense again. The export must now be successful.