Hello, I have two otrs systems installed at my work for different departments. The customers to both are the same. I'd like use the same tables of customers to both systems. So, I have all required values at the database for the first system and I put at the file Config.pm on the second system the following values: $Self->{'Customer::AuthModule'} = 'Kernel::System::CustomerAuth::DB'; $Self->{'Customer::AuthModule::DB::Table'} = 'customer_user'; $Self->{'Customer::AuthModule::DB::CustomerKey'} = 'login'; $Self->{'Customer::AuthModule::DB::CustomerPassword'} = 'pw'; $Self->{'Customer::AuthModule::DB::DSN'} = "DBI:Oracle:sid=sid_DB_the_first_system;host=Host_DB_the_first_system;port=1521;"; $Self->{'Customer::AuthModule::DB::User'} = "DBUser_the_first_system"; $Self->{'Customer::AuthModule::DB::Password'} = "DBUserPassword_the_first_system"; It doesn't work! Can't I use external backend so? Any another idea to I don't need replicating the customers and I manage them on the same system? thanks, Jocielma Monteiro