# Account class codes
The purpose of the **account class code** is to differentiate various account balances in the General Ledger. For example, when respective account class codes are created and associated with unique finance accounts, the safeguarded account balances are kept separately from regular account balances in the General Ledger.
## Create account class codes
1. **Accounts** > **Settings** > **Class codes**.
2. From the content menu, choose **Account class code values**.
3. Click the **Add new class code** button.
4. Enter the account class code values > **Save**.
## Create account class code rules
1. **Accounts** > **Settings** > **Class codes**.
2. From the content menu, choose **Account class code rules**.
3. Click the **Create rule** button.
4. Enter the [rule conditions](/backoffice-user-guides/iDyT31cW9CYApPltrXUd/accounts-guide/account-class-codes/account-class-code-rule-parameters.md) > **Save**.
## Modify account class codes and rules
You can modify account class codes and rules by pressing the pencil sign.
{% hint style="info" %}
You can modify only the following parameters:
* **account class code values** - you can update the **description**.
* **account class code rules** - you can update the **validity range to** parameter.
{% endhint %}
### Delete account class codes and rules
You can only delete the account class codes if they **are not used** by the account class code rules.
{% hint style="info" %}
You can invalidate the account class rule by changing the **validity range** **to** parameter.
{% endhint %}
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