---
title: entryUUID
description: Holds a Universally Unique Identifier (UUID) assigned to the entry.
component: pingds
version: 8.1
page_id: pingds:schemaref:at-entryUUID
canonical_url: https://docs.pingidentity.com/pingds/8.1/schemaref/at-entryUUID.html
---

# entryUUID

Holds a Universally Unique Identifier (UUID) assigned to the entry.

The server generates the value of this operational attribute when adding the entry to the directory.

A UUID is a 16-octet (128-bit) string, constrained to the namespace specified in [RFC 4122](https://www.rfc-editor.org/rfc/rfc4122.html) , and encoded using the ASCII representation.

Example: `597ae2f6-16a6-1027-98f4-d28b5365dc14`.

|                             |                                                           |
| --------------------------- | --------------------------------------------------------- |
| *OID*                       | 1.3.6.1.1.16.4                                            |
| *Names*                     | entryUUID                                                 |
| *Description*               | UUID of the entry                                         |
| *Syntax*                    | [UUID](s-UUID.html)                                       |
| *Equality matching rule*    | [uuidMatch](mr-uuidMatch.html)                            |
| *Ordering matching rule*    | [uuidOrderingMatch](mr-uuidOrderingMatch.html)            |
| *Single value*              | true                                                      |
| *User modification allowed* | false                                                     |
| *Usage*                     | directoryOperation                                        |
| *Origin*                    | [RFC 4530](https://datatracker.ietf.org/doc/html/rfc4530) |
| *Schema file*               | 00-core.ldif                                              |