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

# CSV and XML response handling

Data Fetcher supports API responses in multiple formats, including **CSV** and **XML**. These options in **Advanced settings** control how Data Fetcher interprets those responses before converting them into Airtable records.

## CSV: includes header row

The **CSV: includes header row** option controls how Data Fetcher interprets CSV responses.

When enabled, Data Fetcher treats the **first row of the CSV file as column headers** and uses them to determine the field names written to Airtable.

### When to enable this option

Enable **CSV: includes header row** if the CSV file includes column names in the first row.

Example CSV:

```
name,email,company
Jane Doe,jane@example.com,Acme
John Smith,john@example.com,Globex
```

In this case, the first row (`name,email,company`) will be used as the field names.

### When to disable this option

Disable this option if the CSV file **does not include header rows**. Otherwise, the first row of data may be interpreted as field names.

## XML array handling

When Data Fetcher fetches XML responses, it converts the XML into tabular data (fields and records) in two steps:

1. The [xml2js](https://www.npmjs.com/package/xml2js) package converts the XML into a JavaScript object.
2. Data Fetcher then transforms this object into tabular data using the standard [response data transformation](/advanced-options/response-data-transformations).

By default, XML child nodes are only treated as arrays when there are multiple nodes. If there is only one child node, it is treated as an individual object.

To treat **all child nodes as arrays**, even when there is only one:

1. Navigate to the request screen in Data Fetcher.
2. Open **Advanced settings**.
3. Scroll down and toggle **Always put child nodes in array**.