[Koha] software error in processing for managing suggestions (acquisition)

To Discussion forum Koha Group Dear Sir: Greetings to all members of discussion forum. Recently I get some training in koha and try to put data in Koha in our GIDR Library, Gota, Ahmedabad, India. But entering the details through *Acquisitions - Suggestions - Enter a new purchase suggestion- . *When I submitting it I got the software mistake and showing following message. Software error: *DBIx::Class::Storage::DBI::_dbh_execute(): Column 'suggestedby' cannot be null at /usr/share/koha/lib/C4/Suggestions.pm line 45* I hope you will able to solve my query at the earliest and guide me if I made in mistake in procedure. Thanks and regards, Kamlesh Vyas Library Assistant GIDR, GOTA, AHMEDABAD, GUJARAT STATE, INDIA