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**To create a mapping between an event source and an AWS Lambda function**
The following ``create-event-source-mapping`` example creates a mapping between an SQS queue and the ``my-function`` Lambda function. ::
aws lambda create-event-source-mapping \
--function-name my-function \
--batch-size 5 \
--event-source-arn arn:aws:sqs:us-west-2:123456789012:mySQSqueue
Output::
{
"UUID": "a1b2c3d4-5678-90ab-cdef-11111EXAMPLE",
"StateTransitionReason": "USER_INITIATED",
"LastModified": 1569284520.333,
"BatchSize": 5,
"State": "Creating",
"FunctionArn": "arn:aws:lambda:us-west-2:123456789012:function:my-function",
"EventSourceArn": "arn:aws:sqs:us-west-2:123456789012:mySQSqueue"
}
For more information, see `AWS Lambda Event Source Mapping <https://docs.aws.amazon.com/lambda/latest/dg/invocation-eventsourcemapping.html>`__ in the *AWS Lambda Developer Guide*.