---
title: Attribute syntax definition
description: New attribute syntaxes require additional code to be implemented on the PingDirectory server.
component: pingdirectory
version: 11.0
page_id: pingdirectory:pingdirectory_server_administration_guide:pd_ds_attr_syntax_def
canonical_url: https://docs.pingidentity.com/pingdirectory/11.0/pingdirectory_server_administration_guide/pd_ds_attr_syntax_def.html
revdate: September 13, 2023
---

# Attribute syntax definition

New attribute syntaxes require additional code to be implemented on the PingDirectory server.

If you need new syntax definitions, contact Ping Identity support for assistance.

The following formal specification for attribute types is provided in [RFC 4512](https://tools.ietf.org/html/rfc4512), section 4.1.5.

```
SyntaxDescription = "(" wsp
numericoid	              ; Object identifier
[ sp "DESC" sp qdstring ]     ; Description
extensions wsp ")"	      ; Extensions followed by a white space and ")"
```