---
title: "Missing Result on Rules"
slug: "missing-evaluation-on-rules"
tags: ["Rules"]
updated: 2025-06-17T18:13:05Z
published: 2025-06-17T18:13:05Z
canonical: "documentation.decisions.com/missing-evaluation-on-rules"
---

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

# Missing Result on Rules

## Overview

By default, Missing input data will be treated as a null value, causing **Rules** to evaluate as **True** or **False** based on their conditions. Rules can be configured to enable a Missing Result outcome, creating a new outcome path to handle missing input data if used in a **Flow**.

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## Enabling Missing Result

The following example will demonstrate a Rule with **Show Missing Result** enabled.

1. [Create a Rule](/v9/docs/create-rules) and define a few inputs and conditions.
2. In the Properties Panel, navigate to Output and check **Show Missing Result**. A new outcome will appear, labeled as **Missing**. ![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2025-06-17_14h11_27.png)
3. Debug the Rule. Notice that if input values for the condition are missing, the Rule will evaluate it as Missing.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2025-06-17_14h12_46.png)

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For further information on Rules, visit the [Decisions Forum](https://community.decisions.com/categories/Rules).