# Find missing data

While viewing the page, you may notice that some material groups have numbers indicating the amount of available properties for that group. This means that direct data is available for those properties.

For property groups marked with asterisks, direct data is not available. However, you can potentially find data for these properties in similar materials.

<figure><img src="/files/uX3TOzEgdw87qDGKEkCH" alt=""><figcaption></figcaption></figure>

When you click on a property group marked with an asterisk, the page will display all similar materials that have direct data for the required property group.&#x20;

To find a specific property or group of properties, you can filter the list by clicking the button in the top left corner of the table (number 1. picture below). This will open a checklist where you can select the desired properties. For more information about Master List click <mark style="color:red;">here.</mark>

<figure><img src="/files/eyWBTwKNIW0iQ7SJf26y" alt=""><figcaption></figcaption></figure>

In the Material List, there is an Equivalent category column that aids in material selection. For a detailed explanation of Equivalent categories, refer to the previous section (Find Equivalent materials).

<figure><img src="/files/8aDzR7uGo1QovV4MMUZz" alt=""><figcaption></figcaption></figure>

Clicking the equilibrium arrows opens a pop-up window, letting you compare your material with similar ones for easier selection. This pop-up window provides a comparison of Chemical Composition, Mechanical Properties, and Physical Properties in either a Synthetic view or a Detailed view.

<figure><img src="/files/oshdEMqZYpdDvWDbifTJ" alt=""><figcaption></figcaption></figure>

After selecting a similar material, clicking on it will bring you to the direct data for the chosen property group.

<figure><img src="/files/9CZujV0GvZkUmHWR4gex" alt=""><figcaption></figcaption></figure>

If a specific property is not available for a material, you can find it in similar materials using the Cross Reference table and the advanced search tool. By selecting all materials from the Cross Reference table and forwarding them to Advanced Search, you can search for the specific property you need.

<figure><img src="/files/s1mqs4aQUcZllyPSfBD0" alt=""><figcaption></figcaption></figure>

Adding criteria in Advanced Search will narrow down the list, making it easier to find the desired information.

<figure><img src="/files/sUtwEJqQ2znzgTZn0Xn3" alt=""><figcaption></figcaption></figure>


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.totalmateria.com/material-pages/find-missing-data.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.