Its because of duplicate ids in your database. Please log in as administrator (Staff Client of course) and go to About Koha. You will find a list of errors. Those duplicate ids need to be deleted Sitali CS On 22 August 2017 at 17:49, Luis Moises Rojas <lmoisesrojas@gmail.com> wrote:
Hello everybody,
We are having this problem when we try to return a borrowed book:
"The item has not been checked in due to a configuration issue in your system."
What this mean?
Thanks
-- *Luis Moisés Rojas P.*
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