# Machine Learning Extractor

> | **Scenario** | **URL/ML Skill** | **API Key** | **Limitations** | **Track your consumption** |
| --- | --- | --- | --- | --- |
| Community Cloud | Public Document Understanding [Endpoints](public-endpoints.md) | The API Key you find under Licenses for Document Understanding. | Documents of maximum 2 pages.<br /><br />Maximum 50 requests per hour. | N/A |
| Enterprise Cloud | Public Document Understanding [Endpoints](public-endpoints.md) or AI Center hosted custom ML Skill (Public ML Skill endpoint from AI Center / ML Skill) | The API Key you find under Licenses for Document Understanding. | Documents of maximum 30 pages, only if you are using public Document Understanding endpoints. | Home &gt; License Usage &gt; Other Services &gt; Document Understanding (requires Cloud account) |
| Enterprise On-Prem deployed on AI Center standalone | Public ML Skill endpoint from AI Center / ML Skill | The API Key you find under Licenses for Document Understanding. | N/A | Home &gt; License Usage &gt; Other Services &gt; Document Understanding (requires Cloud account) |
| Enterprise On-Prem Air-gapped deployed on AI Center standalone | No URL, select ML Skill instead | N/A | N/A | Tenant &gt; License tab &gt; UiPath Document Understanding card |
| Enterprise On-Prem deployed on Automation Suite | Public ML Skill endpoint from AI Center / ML Skill | The API Key you find under Licenses for Document Understanding. | N/A | Home &gt; License Usage &gt; Other Services &gt; Document Understanding |
| Enterprise On-Prem Air-gapped deployed on Automation Suite | Public ML Skill endpoint from AI Center / ML Skill | The API Key you find under Licenses for Document Understanding. | N/A | Home &gt; License Usage &gt; Other Services &gt; Document Understanding |

| **Scenario** | **URL/ML Skill** | **API Key** | **Limitations** | **Track your consumption** |
| --- | --- | --- | --- | --- |
| Community Cloud | Public Document Understanding [Endpoints](public-endpoints.md) | The API Key you find under Licenses for Document Understanding. | Documents of maximum 2 pages.Maximum 50 requests per hour. | N/A |
| Enterprise Cloud | Public Document Understanding [Endpoints](public-endpoints.md) or AI Center hosted custom ML Skill (Public ML Skill endpoint from AI Center / ML Skill) | The API Key you find under Licenses for Document Understanding. | Documents of maximum 30 pages, only if you are using public Document Understanding endpoints. | Home &gt; License Usage &gt; Other Services &gt; Document Understanding (requires Cloud account) |
| Enterprise On-Prem deployed on AI Center standalone | Public ML Skill endpoint from AI Center / ML Skill | The API Key you find under Licenses for Document Understanding. | N/A | Home &gt; License Usage &gt; Other Services &gt; Document Understanding (requires Cloud account) |
| Enterprise On-Prem Air-gapped deployed on AI Center standalone | No URL, select ML Skill instead | N/A | N/A | Tenant &gt; License tab &gt; UiPath Document Understanding card |
| Enterprise On-Prem deployed on Automation Suite | Public ML Skill endpoint from AI Center / ML Skill | The API Key you find under Licenses for Document Understanding. | N/A | Home &gt; License Usage &gt; Other Services &gt; Document Understanding |
| Enterprise On-Prem Air-gapped deployed on Automation Suite | Public ML Skill endpoint from AI Center / ML Skill | The API Key you find under Licenses for Document Understanding. | N/A | Home &gt; License Usage &gt; Other Services &gt; Document Understanding |

:::important
Currently, no warnings are sent out when you are close to the Document Understanding consumption limit, so please check your consumption status periodically. If you run out of Document Understanding units, your activity will stop running.
:::