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

# Update study

> Partially update a study

Updates only the fields you send. `config` is **merged** into the stored configuration (existing keys you don't send are preserved); all other fields are replaced.

<ParamField path="id" type="string" required>
  The study ID.
</ParamField>

<ParamField body="title" type="string">New title.</ParamField>
<ParamField body="description" type="string">New description.</ParamField>

<ParamField body="config" type="object">
  Configuration changes, merged into the existing config.
</ParamField>

<ParamField body="welcome_message" type="object">Replaces the welcome message.</ParamField>
<ParamField body="thank_you_message" type="object">Replaces the thank-you message.</ParamField>
<ParamField body="screen_out_message" type="object">Replaces the screen-out message.</ParamField>
<ParamField body="folder_id" type="string">Move the study to a folder.</ParamField>

### Response

The updated study object.

<RequestExample>
  ```bash cURL theme={null}
  curl -X PUT https://api.getversive.com/api/v1/studies/9b2f7c1e-4a4b-4f6e-9a1d-1c2d3e4f5a6b \
    -H "Authorization: Bearer $VERSIVE_API_KEY" \
    -H "Content-Type: application/json" \
    -d '{ "config": { "interviewMode": "fast" } }'
  ```
</RequestExample>