# 13. Mutatie: "Farm" aanmaken

Maak een "Boerderij" aan.

{% hint style="info" %}
Het is mogelijk om uw eigen unieke identificatie van de "Boerderij" te koppelen via het `externalKey` attribuut. Het attribuut is optioneel.
{% endhint %}

{% code overflow="wrap" lineNumbers="true" %}

```graphql
mutatie CreateFarmSample {
  createFarm(input:{
    naam: "Mutatie Boerderij"
    externalKey: "<derde_partij_identifier>"
  } ) {
    uuid
    userUuid
    naam
    farmOwnership
    externalKey
  }
}
```

{% endcode %}


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