Solution : https://service.sap.com/sap/support/notes/195524 (SAP Service marketplace login required)
Key words : 
6b                                     additional key words r3setup  db2foros/390  os/390  mvs  installation  aix, 1    pre-installation2    r3setup - instance installation3    post-installation4    installation documentation -, login  300_template=@cdmountpath@/@os@/common/install/sapsrc, login  310_template=@cdmountpath@/@os@/common/install/dbsrc, step_group=sapsys  step_user=@lower_sapsystemname@adm instance profile, progctl class facility read access profile bpx, superuser class facility read access profile bpx, daemon class facility read access profile bpx, step_group=sapsys  step_user=@lower_sapsystemname@adm  [dbcheckclean_ind_db2], /<sapsid>adm/startsap_<hostname>_<instance_number>  /
Related Notes : 
       
| 81737 | DB2-z/OS: APAR List |