# Adding entity schemas (services)

## Introduction

When the SFTP connector is used to sync data, Patchworks needs to know the expected data structure (i.e. the schema) of the payload for any entity/entities that you wish to sync. This is achieved by adding entity data structures to the SFTP connector.

## The steps

**Step 1**\
Access [settings](/product-documentation/patchworks-services/service-connectors/the-anatomy-of-a-service-connector.md#connector-settings) for the SFTP connector.

**Step 2**\
Scroll down to the **entities** section and click the **add custom entity** button: 

<figure><img src="/files/zV517YypGCoSVmOZ3DGt" alt=""><figcaption></figcaption></figure>

**Step 3**\
Click the **entity type** field and use the dropdown list to choose the entity that you wish. sync:

<figure><img src="/files/WnRMr6ktjf3Xx7XxGhO7" alt=""><figcaption></figcaption></figure>

**Step 4**\
Enter a display **name** for this entity.

**Step 5**\
To add the required data structure you can either:

* click the **upload csv** button and select a file to update

or

* paste the required structure into the **enter CSV payload** panel

{% hint style="info" %}
You can download a sample payload from the **entities** panel.
{% endhint %}

**Step 6**\
Whichever method you choose to add the required schema, identified fields are displayed in the **detected fields** panel.

<figure><img src="/files/7BtXT6YokLkXnUaoYVLY" alt=""><figcaption></figcaption></figure>

**Step 7**\
If you are satisfied that the data structure is correct, **save** the entity.


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