Mixed Prime and Subs in SAP IS-U

Hi,

There is a requirement in our project to handle the mixed prime and sub cases in IS-U i.e. Prime Meter can be a DM (Daily Metered) and sub can be a non daily meter or the vice versa.

SAP IS-U handles this via Register Relationship or Installation Groups where Prime and Sub both are of same type but not sure in mixed cases.

If you have some pointers on these, can you please let me know ?

Many Thanks,

SJ