ISU and CRM Integration

Hi All,

We are working on ISU on ECC 6.0 and CRM 2007. I wanted to know what are the mandatory objects to be replicated from ISU to CRM. We do not have Installed base management in CRM as of now since we are using Plant Maintenance on ECC side.

Can any one please guide me on what technical and business master data should be synchronized between ISU  and CRM ?

Thanks,

MV