Hierarchy group technical name missing under available hierarchies from OLTP

Hello experts,

I trying to load a hierarchy from ECC cost center group to BW. When I run KSH3 tcode to view the Cost Center Group and enter the group (set) name ,I am able to see the hierarchy (group) from ECC.

But , when I create an InfoPackage and look under available hierarchies from OLTP, the group is not available.

Can anyone knows what could be wrong?

Thanks.