Cloned from launchpad blueprint https://blueprints.launchpad.net/keystone/+spec/user-locale-api.

Description:

Currently, error/exception messages coming back from Keystone are not translated at all. Ideally, we would like to have the messages translated to the request senders locale, which we can support using the HTTP Accept-Language header to determine a preferred locale before sending back the translated response. Alternatively, there is the possibility of using the tenant/user data to store a preferred locale for the request.

There is a similar blueprint for Nova that can be used to track the implementation work there:
https://blueprints.launchpad.net/nova/+spec/user-locale-api

Specification URL (additional information):

None