# Lambda parameters for Amazon DynamoDB event source mappings
All Lambda event source types share the same [CreateEventSourceMapping](https://docs.aws.amazon.com/lambda/latest/api/API_CreateEventSourceMapping.html) and [UpdateEventSourceMapping](https://docs.aws.amazon.com/lambda/latest/api/API_UpdateEventSourceMapping.html) API operations. However, only some of the parameters apply to DynamoDB Streams.
| Parameter | Required | Default | Notes |
| --- | --- | --- | --- |
| BatchSize | N | 100 | Maximum: 10,000 |
| BisectBatchOnFunctionError | N | false | none |
| DestinationConfig | N | N/A | Standard Amazon SQS queue or standard Amazon SNS topic destination for discarded records |
| Enabled | N | true | none |
| EventSourceArn | Y | N/A | ARN of the data stream or a stream consumer |
| FilterCriteria | N | N/A | [Control which events Lambda sends to your function](invocation-eventfiltering.md) |
| FunctionName | Y | N/A | none |
| FunctionResponseTypes | N | N/A | To let your function report specific failures in a batch, include the value `ReportBatchItemFailures` in `FunctionResponseTypes`. For more information, see [Configuring partial batch response with DynamoDB and Lambda](services-ddb-batchfailurereporting.md). |
| MaximumBatchingWindowInSeconds | N | 0 | none |
| MaximumRecordAgeInSeconds | N | -1 | -1 means infinite: failed records are retried until the record expires. The [data retention limit for DynamoDB Streams](https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.html#Streams.DataRetention) is 24 hours. Minimum: -1 Maximum: 604,800 |
| MaximumRetryAttempts | N | -1 | -1 means infinite: failed records are retried until the record expires Minimum: 0 Maximum: 10,000 |
| ParallelizationFactor | N | 1 | Maximum: 10 |
| StartingPosition | Y | N/A | TRIM\_HORIZON or LATEST |
| TumblingWindowInSeconds | N | N/A | Minimum: 0 Maximum: 900 |