Route53 swap failed

[jflefebvre06]

I am trying to implement zero downtime deployment using the replace-environment mojo but I get the following error :
[WARNING] Attempt #1/15 failed. Sleeping and retrying. Reason: LoadBalancer name cannot be longer than 32 characters (Service: AmazonElasticLoadBalancing; Status Code: 400; Error Code: ValidationError; Request ID: cd751d52-511f-11e7-ba01-05fe1144e905) (type: class com.amazonaws.AmazonServiceException)
Same problem with the 2 configurations :

<domains>
    <domain>my.domain.com:Z3QXXX</domain>
</domains>

and

<domains>
    <domain>my.domain.com</domain>
</domains>