I recently took over a network that had a Exchange 2010 server that needed to be updated to Exchange 2013.  There were a lot of migration problems because of legacy issues and we have resolved almost all of them down to this final one. I have searched online and can't really find anyone who has dealt with this issue in a recent version of Exchange server.   I get a warning in the ECP for Exchange 2013 as follows:

Warning

The object domain.local/Company/Program Users/Microsoft Schedule+ FreeVBusy Connector (<old server name ie not 2010 or 2013>) has been corrupted and it's in an inconsistent state. The Following validation errors happened:

Database is mandatory on UserMailbox.

I tried to post a screenshot of the error but I am not allowed yet being a new poster I guess.  From the research I have done this is a left over from 5.5/2000 days.  Is that correct? The 2010 server is still online so I can use that to remove this problem or with the 2013 server.  Once I handle this problem then I will decommission the 2010 server from the network.   

Thanks.

Do you have anything listed in the Routing Groups container when using ADSIEdit? Configuration>Services>Microsoft Exchange>OrgName>Administrative Groups>Routing Groups?

Hi,

As far as I know, this object is related to Exchange 5.5 and Exchange 2000 server as you mentioned.
For the free busy connector then you should be able to delete it, as there is no effect in Exchange 2003 or latest version. Exchange 2003 and later does have a Schedule Plus element, but this is managed via the system folders.
However, please test everything works fine in current environment before remove this object, especially public folder.