# How To: Lexoffice Integration

_By Brandon Munn · Oct 14, 2024_

_Please note that once items are posted from BrewMan to Lexoffice, Brewman cannot post any subsequent changes to Lexoffice. Any changes will need to be made inside your Lexoffice._

To begin, go into the **Integrations** menu and activate Lexoffice. Here you will be asked for an API key which can be found here: [https://app.lexoffice.de/addons/public-api](https://app.lexoffice.de/addons/public-api)

Enter the key generated and click **Save Lexoffice API Key**. The link between the two systems will now be activated.

Once your **Orders** are marked as complete, then they can be posted within **Administration** → **Accounts Posting** → **Transactions**. 

You can then tick orders and add them to the **Posting Queue** to send them to Lexoffice and change their status in BrewMan to **Historic.**

For help with orders click [**here**.](https://features.premiersystems.com/admin/kb/a/how-to-enter-orders/en)

To successfully post orders to Lexoffice you will need to have a **VAT number** and **German Tax Number** on customers and also the correct VAT codes within **Administration** → **Settings** → **Products** → **VAT Codes**.

The valid **VAT Codes** you can use are:

-   **Gross**
    
-   **Net**
    
-   **Vatfree**
    
-   **IntraCommunitySupply**
    
-   **ConstructionService13b**
    
-   **ExternalService13b**
    
-   **ThirdPartyCountryService**
    
-   **ThirdPartyCountryDelivery**

[View this article on the web](https://premier-systems-ltd.featureos.help/en/articles/how-to-lexoffice-integration)