• Accept default of 0.  Upon SAVE, the Save Edit functionality automatically assigns the correct value.
• Auto-assigned.
• Jobs that share the same Benefit Record Number also share the same Benefit Program.
• It is best not to change the benefit record number of an existing job. Doing so invalidates primary job indicators on the effective-dated Primary Jobs Table and can result in erroneous processing within Benefits Administration and PeopleSoft Enterprise Payroll for North America, which may lead to abnormal termination of some processes.
• Whenever changes are made through the Job Data, Assign Additional Jobs, or Current Job components, the system checks that only one job within a given benefit record is designated as the primary job. 

Workforce Administration > Job Information > Job Data > Benefits Program Participation link

Ben Admin