> ## Documentation Index
> Fetch the complete documentation index at: https://wundergraphinc-ahmet-eng-9903-mcp-custom-scalars-produce-un.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-eng-9903-mcp-custom-scalars-produce-un/_tsaGVz8R3dhltHl/images/studio/compositions-list-with-composes-status.png?fit=max&auto=format&n=_tsaGVz8R3dhltHl&q=85&s=9469e7e8a690c2883ef74063e0eaba57" 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-eng-9903-mcp-custom-scalars-produce-un/6P-_bZ46HHPlDLum/images/studio/schema-composed-successfully-without-changes.png?fit=max&auto=format&n=6P-_bZ46HHPlDLum&q=85&s=7b78005e7825016d6b097d814bfa34bd" 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-eng-9903-mcp-custom-scalars-produce-un/_tsaGVz8R3dhltHl/images/studio/composition-error-from-missing-field.png?fit=max&auto=format&n=_tsaGVz8R3dhltHl&q=85&s=90a2a2be74bbc76e46bf48c1d819c2f1" 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>