# Specification Attribute

## Possible Entity Keys

Specification Attribute supprots ID or Name as entity key.

{% hint style="warning" %}
Your entity key must be unique. If you have two specification attributes with same Name fields, you will not be able to use Name as entity key.
{% endhint %}

## Column Destinations

{% hint style="info" %}
Altohugh category has many different column destinations, we would describe only ones that have special functionality.
{% endhint %}

<table><thead><tr><th width="213">Column destination</th><th>Explanation</th></tr></thead><tbody><tr><td>Key (Specification Id)</td><td>The value that you selected as entity key for this template.</td></tr></tbody></table>