functionName

The name or ARN of the Lambda function.

Name formats

• Function name – my-function.

• Function ARN – arn:aws:lambda:us-west-2:123456789012:function:my-function.

• Partial ARN – 123456789012:function:my-function.

The length constraint applies only to the full ARN. If you specify only the function name, it is limited to 64 characters in length.