---
title: uid
description: Computer system login names associated with the entry.
component: pingds
version: 8.1
page_id: pingds:schemaref:at-uid
canonical_url: https://docs.pingidentity.com/pingds/8.1/schemaref/at-uid.html
---

# uid

Computer system login names associated with the entry.

Example: `bjensen`, `root`.

|                             |                                                                                                                                                                                                                                                                                                                                        |
| --------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| *OID*                       | 0.9.2342.19200300.100.1.1                                                                                                                                                                                                                                                                                                              |
| *Names*                     | uid, userid                                                                                                                                                                                                                                                                                                                            |
| *Syntax*                    | [DirectoryString](s-DirectoryString.html)                                                                                                                                                                                                                                                                                              |
| *Equality matching rule*    | [caseIgnoreMatch](mr-caseIgnoreMatch.html)                                                                                                                                                                                                                                                                                             |
| *Ordering matching rule*    | [caseIgnoreOrderingMatch](mr-caseIgnoreOrderingMatch.html)                                                                                                                                                                                                                                                                             |
| *Substring matching rule*   | [caseIgnoreSubstringsMatch](mr-caseIgnoreSubstringsMatch.html)                                                                                                                                                                                                                                                                         |
| *Single value*              | false: multiple values allowed                                                                                                                                                                                                                                                                                                         |
| *User modification allowed* | true                                                                                                                                                                                                                                                                                                                                   |
| *Usage*                     | userApplications                                                                                                                                                                                                                                                                                                                       |
| *Origin*                    | [RFC 4519](https://datatracker.ietf.org/doc/html/rfc4519)                                                                                                                                                                                                                                                                              |
| *Schema file*               | 00-core.ldif                                                                                                                                                                                                                                                                                                                           |
| *Used by*                   | [account](oc-account.html), [inetOrgPerson](oc-inetOrgPerson.html), [inetuser](oc-inetuser.html), [pilotPerson](oc-pilotPerson.html), [posixAccount](oc-posixAccount.html), [sambaSamAccount](oc-sambaSamAccount.html), [shadowAccount](oc-shadowAccount.html), [uidObject](oc-uidObject.html), [untypedObject](oc-untypedObject.html) |