Solution : https://service.sap.com/sap/support/notes/556199 (SAP Service marketplace login required)
Key words :
importing parameters i_nodename type rshi_nodename, public instance method sid_for_member_get, private instance method _niobjnm_leaf_check, importing parameter i_niobjnm, time-dependent hierarchies, fully installed automatically, exporting parameter e_th_sid, returning parameter r_result, i_niobjnm type rsd_iobjnm, import support package 6