Firstly, parameter HRJTDEF needs to be blanked out from N. To do this select any field, save and then reopen and remove the selected field and resave. This will then allow you to create the job titles.
In order to set up job titles you need to create Job Groups (examples could be Accounting, IT) within Central Repository - Job Groups and Add.
Once you have added the Job groups into here click on the hyperlink and select add to input the individual job titles. You can add as little or as much detail as you would like.
Once the job titles have been created you can then go into the employees and add them in.
If your require any further support please let me know.