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That usually means your DB is at version 86 (you can check the DB table to see, the table is called migration_version or something)
BUT your keystone version is older and doesn’t know about version 86. 

Is it possible the keystone version your running is older and doesn’t know about version 86?

Sam






> On 23 Jun 2016, at 9:35 PM, Alvise Dorigo <alvise.dorigo at pd.infn.it> wrote:
> 
> Hi,
> I've a Kilo installation which I want to migrate to Liberty.
> I've installed the Liberty Keystone's RPMs and configured the minimun to upgrade the DB schema ("connection" parameter in the [database] section of keystone.conf).
> Then, I've tried to run
> 
>    su -s /bin/sh -c "keystone-manage db_sync" keystone
> 
> but it's failed with the following error:
> 
>    2016-06-23 13:20:50.191 22423 CRITICAL keystone [-] KeyError: <VerNum(86)>
> 
> which is quite useless.
> 
> Any suggestion ?
> 
> many thanks,
> 
>    Alvise
> 
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