# Error codes with ErrorDetail information in Amazon EMR
<a name="emr-troubleshoot-error-errordetail"></a>

When an EMR cluster terminates with an error, the `DescribeCluster` and `ListClusters` APIs return an error code and an error message. For some cluster errors, the `ErrorDetail` data array can help you troubleshoot the failure.

Errors that include an `ErrorDetail` array provide the following details:

**`ErrorCode`**  
A unique error code that you can use for programmatic access.

**`ErrorData`**  
A list of identifiers in key-value pairs that you can use for programming or manual lookup. For descriptions of the `ErrorData` values that an error code includes, see the troubleshooting page for the error code.

**`ErrorMessage`**  
Description of the error with a link to more information in the Amazon EMR documentation.   
We don’t recommend that you parse the text from `ErrorMessage` because this text is subject to change.

**Topics**
+ [Bootstrap failures](emr-troubleshoot-error-errordetail-bootstrap.md)
+ [Internal errors](emr-troubleshoot-error-errordetail-internal.md)
+ [Validation failures](emr-troubleshoot-error-errordetail-validation.md)