SAP ESS MSS default authorization object

Hi All,

     As we already know, we have ESS and MSS roles exists in SAP HCM. Please suggest me the default authorization object for the ESS and MSS roles.

We have already roles embedded with P_ORGIN and P_PERNR, but need confirmation whether P_ORGIN is mandatory or P_PERNR is mandatory.

Thanks in Advance.