---
title: "Creating Composite Type in Truth Table"
slug: "creating-composite-type-in-truth-table"
description: "Use Truth Tables to evaluate input data against configured conditions and return multiple outputs through a Composite Type."
updated: 2026-06-30T16:19:43Z
published: 2026-06-30T16:19:43Z
canonical: "documentation.decisions.com/creating-composite-type-in-truth-table"
---

> ## 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.

# Creating Composite Type in Truth Table

## Overview

A Truth Table receives user data and evaluates it against configured conditions based on input data. A Truth Table can create a data type to represent combined outputs called a Composite Type. It is used to output multiple rows of a Truth Table with multiple outputs.

## Example

The following example will take in a Zip Code and output the city and state as a composite type.

1. In the Designer Project, click CREATE RULE and select CREATE. Click **Truth Table** and select **External Data** **Truth Table**. Name the External Truth Table and click CREATE.
2. Click the **+** beside GIVEN.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781282026004.png)
3. In the **Input Data** window, enter "Zip Code" in the **Name** field and change the **Type** to **Int32 [Number]**. Click **Save** and close the window.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1782836371530.png)
4. Click **[Select Data Element]** and select **Zip Code**. Click CLOSE.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781282086098.png)
5. For **[Pick Verb]** window, select **Equals** and click CLOSE.  
![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781282143355.png)
6. Hover over the **Default Output Data** column and click the pencil icon.
7. On the **Edit Output Data** window, enter "City" in the Name field and change the Type to **String [Text]**. Click OK.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781282176888.png)
8. Click the plus next to the City column and add a column with the name "State". Click OK.
9. On the **Properties** panel, click EDIT EXTERNAL DATA TRUTH TABLE.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781282208327.png)
10. Under **Data Sources** on the Report Designer, click **Add**. In the search box, enter "csv" and select CSV/Excel Data Source.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781706695646.png)
11. On the Properties panel under the [SETTINGS] category, click **Choose a File** under **CSV or Excel File**, Select a file and click OPEN.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781706718176.png)
12. Select the **Zip Code** Data Field under **Data Fields**. On the Properties panel under the SETTINGS category, change the **Title** to **Zip Code Equals**.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781706951726.png)
13. Click Save and close the Report Designer.
14. On the Properties panel of the Rule Designer, select the **Create Composite Type** option. Uncheck the **Has No Match Outcome** option under the Truth Table. Click Save and close the Truth Table.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781707002910.png)
15. In the Designer Project, click CREATE FLOW. Name the Flow and click CREATE.
16. Click the **Done** path of the **Start** step. Select the **Run Truth Table** step and click ADD.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781707104585.png)
17. On the Properties panel, select PICK OR CREATE TRUTH TABLE and select PICK. Locate the External Truth Table and click PICK.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781707130495.png)
18. Connect the Done path to the **End** Step.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781707152152.png)
19. Select the Run Truth Table step and enter "12345" in the Zip Code field under the INPUTS category.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1781707204470.png)
20. Click Save to save changes to the Flow.

## Debug

1. On the top action bar, click **Debug** and click **START DEBUGGING.**
2. After the debugger runs, select the Truth Table step, select **Execution 1**, and select **View Input/Output Data**. A window will appear that will display the composite data created from the result of the input.