---
title: "Stackable and mutually exclusive rules"
slug: "stackable-and-mutually-exclusive-rules"
updated: 2024-11-02T11:07:18Z
published: 2024-11-02T11:07:18Z
canonical: "docs.scaleinsights.com/stackable-and-mutually-exclusive-rules"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.scaleinsights.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Stackable and mutually exclusive rules

**Stackable rules**

You can stack multiple rules to the same ad, and the algorithm will execute the rule's action if it meets the trigger condition.

![bidding-algorithm](https://cdn.document360.io/f0238742-849b-4f29-9812-9b4fe8e273b6/Images/Documentation/bidding-algorithm.png)

You can **extend** a Strategic Objective's behavior by assigning additional rules to an ad group.

![](https://cdn.document360.io/f0238742-849b-4f29-9812-9b4fe8e273b6/Images/Documentation/SO%201(1).png)In the above example, the ad group has a Strategic Objective containing 3 **inherited** bidding rules with a **[Strategy]** text besides their name.

The ad group also has 2 individually assigned rules; **Bidding Rule 1** and **Bidding Rule 4**.

Algorithms will **ignore** duplicate rules and will not run the same rule twice.

The bidding algorithm will run **Bidding Rule 1**, **Bidding Rule 2**, **Bidding Rule 3**, and **Bidding Rule 4** based on user-defined **order of priority**.

The algorithm will evaluate rules with **higher priority** over those with lower priority. ![](https://cdn.document360.io/f0238742-849b-4f29-9812-9b4fe8e273b6/Images/Documentation/SO%202.png)

---

**Mutually exclusive rules**

You can only assign 1 rule to an ad.

For example, dayparting is mutually exclusive by nature; an ad can be paused or enabled from 1 am to 2 am.

![](https://cdn.document360.io/f0238742-849b-4f29-9812-9b4fe8e273b6/Images/Documentation/image.png)

An assigned rule takes priority over an inherited rule

You can **overwrite** a Strategic Objective's behavior by assigning a rule to the ad group. ![](https://cdn.document360.io/f0238742-849b-4f29-9812-9b4fe8e273b6/Images/Documentation/SO%203.png)

In the above example, the ad group has a Strategic Objective with the dayparting rule **Optimum Hours**.

However, the ad group also has the dayparting rule **Always Enabled**.

The **Always Enabled** rule will supersede the one in Strategic Objective, striking off the inherited rule.

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The table below shows the type for each algorithm.

| **Algorithms** | **Type** |
| --- | --- |
| Dayparting | Mutually exclusive |
| Bidding | Stackable |
| Import | Stackable |
| Negative | Stackable |
| Negative Word | Stackable |
| Blacklist | Mutually exclusive |
| Revive | Stackable |
| Default Bid | Mutually exclusive |
| Status | Stackable |
| Daily Budget | Mutually exclusive |
| Placement | Stackable |