## Troubleshooting Amazon MSK connectivity

URL: https://docs.atlan.com/apps/connectors/messaging/amazon-msk/troubleshooting/troubleshooting-amazon-msk-connectivity

> Learn about troubleshooting amazon msk connectivity.

#### What are the known limitations of the Amazon MSK connector?

Following are the known limitations of the Amazon MSK connector:

- Atlan currently does not support upstream or downstream lineage for Amazon MSK assets.
- Atlan currently only supports asset-level lineage between [topics and consumer groups](https://docs.atlan.com/llms/connectors/amazon-msk/what-does-atlan-crawl-from-amazon-msk/llms.txt). Column-level lineage is currently not supported.
- SASL/SCRAM and TLS authentication methods are currently not supported. Atlan currently only supports [IAM role authentication](https://docs.atlan.com/llms/connectors/amazon-msk/set-up-amazon-msk/llms.txt).
- Serverless deployment for Amazon MSK is currently not supported.
- Atlan currently only supports Apache Kafka version 2.7.1 or higher for Amazon MSK.

#### How to debug test authentication and preflight check errors?

**Invalid region**

`Invalid region. Please provide a valid region.`

- Ensure that you have specified the correct [AWS region in your configuration](https://docs.atlan.com/llms/connectors/amazon-msk/crawl-amazon-msk/llms.txt). The region must match where your Amazon MSK cluster is located.

**Invalid role ARN**

`Invalid role ARN. Please provide a valid role ARN.`

- Ensure that you have specified the correct [role ARN in your configuration](https://docs.atlan.com/llms/connectors/amazon-msk/crawl-amazon-msk/llms.txt).
- Ensure that the role has the [required permissions](https://docs.atlan.com/llms/connectors/amazon-msk/set-up-amazon-msk/llms.txt) to perform operations in your Amazon MSK cluster.

**Invalid bootstrap server**

`Invalid bootstrap server details. Please provide a valid bootstrap server.`

- Ensure that you have specified the correct [bootstrap server in your configuration](https://docs.atlan.com/llms/connectors/amazon-msk/crawl-amazon-msk/llms.txt).
- Ensure that the IAM role has the [required permissions](https://docs.atlan.com/llms/connectors/amazon-msk/set-up-amazon-msk/llms.txt) to connect to Amazon MSK.
- If you're also using private network link, ensure that [private network connectivity between Atlan and Amazon MSK](https://docs.atlan.com/llms/connectors/amazon-msk/set-up-a-private-network-link-to-amazon-msk/llms.txt) is properly configured.

**Internal server error**

`Internal server error. Please contact Atlan admin.`

- There may be a connectivity issue between Atlan and your Amazon MSK cluster. [Reach out to Atlan support](https://docs.atlan.com/support/submit-request).

**Timeout exception**

`Caused by: org.apache.kafka.common.errors.TimeoutException: Error listing groups on <broker-address>:<broker-port> : Timed out waiting to send the call.`

- Ensure that the port is authorized in the inbound rule of the security group for your Amazon MSK cluster.
- If you're also using private network link, ensure that [private network connectivity between Atlan and Amazon MSK](https://docs.atlan.com/llms/connectors/amazon-msk/set-up-a-private-network-link-to-amazon-msk/llms.txt) is properly configured.
- Ensure that both your Amazon MSK cluster and Atlan tenant are hosted in the same AWS region.

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