[[breaking-changes-2.0]]
== Breaking changes in 2.0

This section discusses the changes that you need to be aware of when migrating
your application to Elasticsearch 2.0.

=== Indices API

The <<alias-retrieving, get alias api>> will, by default produce an error response 
if a requested index does not exist. This change brings the defaults for this API in 
line with the other Indices APIs. The <<multi-index>> options can be used on a request 
to change this behavior