# Custom Attributes
# Introduction
OwnIdP stores a number of default attributes:
# User attributes
- First name
- Last name
- Username (optional, if username is allowed as login method)
# Organisation attributes
- Name
- Chamber of Commerce number (optional)
- Branch number (optional)
- Organisation code (optional)
In addition to these predefined attributes, you can add custom attributes to Organisations, Organisation-Users and Users. The only restriction is the support attribute types (String, Integer, Date, Boolean).
# Technical specifications
| Field Name | Max length | Required | Constraints |
|---|---|---|---|
| Name | 128 | Yes | Can not start with a digit |
| Description | Yes | Text | |
| Type | Dropdown | Yes | Can only be one of Boolean, Date, Integer, String |
| Value | No | Text/number |
# Custom attributes types
| Type | Allowed values |
|---|---|
| Boolean | False,True, 0, 1 |
| Date | Any date in YYYY-MM-DD format |
| Integer | Positive or negative non-decimal numbers |
| String | Everything |
Note
An attribute with the same name (either custom or predefined) should not exist.