> ## Documentation Index
> Fetch the complete documentation index at: https://wundergraphinc-ahmet-router-628-demo-environment-to-demonst.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Compositions

> Comprehensive records detailing every instance of a subgraph publication.

<Frame>
  <img src="https://mintcdn.com/wundergraphinc-ahmet-router-628-demo-environment-to-demonst/eXly8iEnaqSRCLT2/images/studio/compositions-list-with-composes-status.png?fit=max&auto=format&n=eXly8iEnaqSRCLT2&q=85&s=9893514cfa404b35e7f90ef6ac4c0b26" alt="Cosmo Docs compositions list with green Composes status icons" title="Compositions list with Composes status" width="768" height="418" data-path="images/studio/compositions-list-with-composes-status.png" />
</Frame>

The highlights of the compositions page are as follows:

* Track the inputs and the errors of every composition.

* Track every version of your composed schema.

* View the changes in the federated graph after each composition.

* Understand what version is currently available to the router.

<Frame>
  <img src="https://mintcdn.com/wundergraphinc-ahmet-router-628-demo-environment-to-demonst/4lDUaFlXcj_H1WVg/images/studio/schema-composed-successfully-without-changes.png?fit=max&auto=format&n=4lDUaFlXcj_H1WVg&q=85&s=aed00f47278ad0fa3c49e984fab5712d" alt="Composed schema with no changes and trigger from suvj@wundergraph.com in Cosmo Docs" title="Schema composed successfully without changes" width="768" height="409" data-path="images/studio/schema-composed-successfully-without-changes.png" />
</Frame>

<br />

<Frame caption="Composition errors">
  <img src="https://mintcdn.com/wundergraphinc-ahmet-router-628-demo-environment-to-demonst/eXly8iEnaqSRCLT2/images/studio/composition-error-from-missing-field.png?fit=max&auto=format&n=eXly8iEnaqSRCLT2&q=85&s=ca78a0828b36cbb9c12abe58eae74894" alt="Cosmo Docs composition error caused by missing schema field" title="Composition error from missing field" width="768" height="418" data-path="images/studio/composition-error-from-missing-field.png" />
</Frame>