---
title: "KOST1 and KOST2 values for Administrators - Payhawk Help Center"
slug: "adding-kost1-and-kost2-values-and-hiding-the-fields"
description: "Add KOST1 and KOST2 values to expenses and hide the fields you do not use. Payhawk creates both fields after the DUO connection, and the integration needs them."
updated: 2026-10-27T14:44:51Z
published: 2026-10-27T14:44:51Z
canonical: "payhawk.com/adding-kost1-and-kost2-values-and-hiding-the-fields"
---

> ## 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.

# Adding KOST1 and KOST2 values and hiding the fields

After you have [established a connection between Payhawk and DUO](/help/connecting-payhawk-to-duo), Payhawk automatically creates the **KOST1** and **KOST2** custom fields.

> [!WARNING]
> Even if you may not want to use the KOST1 and KOST2 custom fields, do not delete them as they are required for the Payhawk-DATEV integration to work seamlessly.

## Setting the KOST1 and KOST2 fields

To include all values that are related to **KOST1** and **KOST2**:

1. In the [Payhawk Web Portal](https://portal.payhawk.com), open the app switcher in the top-left corner and go to **Settings**, then select **Fields library**.
2. Select the **KOST1** or **KOST2** label. For the purposes of this example, select **KOST1**. To add **KOST2** values, follow the same steps.
3. Click on the **+ Add value** button.
4. In the dialog that opens, fill out the details, such as a user-friendly name of the category (**Label**), the value of the field you want to be exported to DUO (**External ID**), the field managers (**Managers** drop-down list), and who will be able to see the field (**Visibility** drop-down list). You can also add conditions for the field to be displayed (**Conditional display**).![Interface for adding a new label with fields for ID, managers, and visibility settings.](https://storage.googleapis.com/payhawk-cdn/Adm%3AIntegrations%3ALeftImages/KOSTvalues.png)

> [!TIP]
> Payhawk supports nested values in the **KOST 1** field and allows you to use hierarchical formats such as **Location/Berlin** or **Location/Barcelona** when selecting conditional display options.

## Hiding the KOST1 and KOST2 fields

If you don't need the **KOST1** and **KOST2** custom fields, you can set them as not visible.

1. Open the app switcher in the top-left corner and go to **Settings**, then select **Fields library** > **KOST1**.
2. Under **Values**, go to **Visibility** and deselect all teams and specific users. However, there are roles that will be always able to see the filed, for example, Payhawk Administrators.
3. Click on **Save***.*

As a result, the **KOST1** and **KOST2** custom fields won't appear when you upload expenses to Payhawk.

## Next steps

- [Sharing your suppliers between the Payhawk and DUO systems](/help/sharing-suppliers-between-payhawk-and-duo)