# Troubleshoot errors in Amazon Data Firehose
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If Firehose encounters errors while delivering or processing data, it retries until the configured retry duration expires. If the retry duration ends before the data is delivered successfully, Firehose backs up the data to the configured S3 backup bucket. If the destination is Amazon S3 and delivery fails or if delivery to the backup S3 bucket fails, Firehose keeps retrying until the retention period ends. 

For information about tracking delivery errors using CloudWatch, see [Monitor Amazon Data Firehose Using CloudWatch Logs](monitoring-with-cloudwatch-logs.md).

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#### [ Direct PUT ]

For `DirectPut` Firehose streams, Firehose retains the records for 24 hours. For a Firehose stream whose data source is a Kinesis data stream, you can change the retention period as described in [Changing the Data Retention Period](https://docs.aws.amazon.com/streams/latest/dev/kinesis-extended-retention.html). In this case, Firehose retries the following operations indefinitely: `DescribeStream`, `GetRecords`, and `GetShardIterator`.

If the Firehose stream uses `DirectPut`, check the `IncomingBytes` and `IncomingRecords` metrics to see if there's incoming traffic. If you are using the `PutRecord` or `PutRecordBatch`, make sure you catch exceptions and retry. We recommend a retry policy with exponential back-off with jitter and several retries. Also, if you use the `PutRecordBatch` API, make sure your code checks the value of [FailedPutCount](https://docs.aws.amazon.com/firehose/latest/APIReference/API_PutRecordBatch.html#Firehose-PutRecordBatch-response-FailedPutCount) in the response even when the API call succeeds.

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#### [ Kinesis Data Stream ]

If the Firehose stream uses a Kinesis data stream as its source, check the `IncomingBytes` and `IncomingRecords` metrics for the source data stream. Additionally, ensure that the `DataReadFromKinesisStream.Bytes` and `DataReadFromKinesisStream.Records` metrics are being emitted for the Firehose stream.

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