> For the complete documentation index, see [llms.txt](https://platform9.com/kb/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://platform9.com/kb/pmo/how-to/instance-deployment-failing-for-certain-amis-in-platform9-manag.md).

# Instance Deployment Failing for Certain AMIs in Platform9 Managed Omni

## Problem

Instance deployment fails for certain images with the following error.

{% tabs %}
{% tab title="None" %}

```none
An error occurred (Unsupported) when calling the RunInstances operation: The requested configuration is currently not supported. Please check the documentation for supported configurations.
```

{% endtab %}
{% endtabs %}

## Environment

* Platform9 Managed OpenStack - v3.6.0 and Higher
* Omni

## Cause

This error is observed because of different architectures associated with the flavor and the AMI. It is possible that the AMI deployed is using ARM64 and the corresponding flavor uses x86\_64.

## Resolution

Deploying the instance with a flavor starting from a1 ( these are backed by Arm-based AWS Graviton Processors) and testing if the instance deployment completes successfully. If it still fails, please log a ticket with the [Platform9 Cloud Support](https://support.platform9.com/hc/en-us/requests/new) team.

## Additional Information

[Information about EC2 instances backed by ARM-based processors](https://aws.amazon.com/blogs/aws/new-ec2-instances-a1-powered-by-arm-based-aws-graviton-processors/)


---

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