---
schema_version: "1"
id: efc97e11fb572e3fa427568b6b1aff9805d05e678e12be931e7dde817c8ca581
title: uuid
collection: mulesoft
version: current
locale: en-us
portal_url: https://docs.salesforce.com/mulesoft/current/en-us/dataweave/2.9/dw-core-functions-uuid.md
canonical_url: https://docs.mulesoft.com/dataweave/2.9/dw-core-functions-uuid
source_site: docs.mulesoft.com
content_type: documentation
content_hash: 152c08b3e4a4a5e52395ca544f27681a2e75e6984ba1555e12481cbf6eb80f41
description: MuleSoft Documentation Site
release: "2.9"
latest: false
---
---
product: DataWeave
version: 2.9
---

# uuid

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

## uuid(): String

Returns a v4 UUID using random numbers as the source.

### Example

This example generates a random v4 UUID.

#### Source

```DataWeave
%dw 2.0
output application/json
---
uuid()
```

#### Output

```JSON
"7cc64d24-f2ad-4d43-8893-fa24a0789a99"
```