---
schema_version: "1"
id: 3c2cc540987686eceb3ef9422f74af0b4efa88a8ebc87cf5d5ff3a1aad7ea349
title: uuid
collection: mulesoft
version: current
locale: en-us
portal_url: https://docs.salesforce.com/mulesoft/current/en-us/dataweave/2.12/dw-core-functions-uuid.md
canonical_url: https://docs.mulesoft.com/dataweave/2.12/dw-core-functions-uuid
source_site: docs.mulesoft.com
content_type: documentation
content_hash: 4285af1932628e4a86b43484d8ebe28c9ca3b37ff886919736b4866e629ad3f2
description: MuleSoft Documentation Site
release: "2.12"
latest: false
---
---
product: DataWeave
version: 2.12
---

# 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"
```