Solution : https://service.sap.com/sap/support/notes/1115641 (SAP Service marketplace login required)
Key words : 
health & safety -> product safety -> substance volume tracking, eq 1 reach pro plaf remfl 1, terms substance volume trackingmonitoring reason, online checks -> activate regulation check, reach pro plaf obart 1, cbrc_pro_data_sep_prod build order key, cbrc_lib_key_build read order key, system displays messages telling, customizing cross-system viewer, substance volume tracking documentation
Related Notes : 
       
| 1449701 | SVT: Overview note providing additional information | 
| 1172607 | SVT: Implementing customer-specific requirements | 
| 1111196 | Setting up the user statuses for the online checks | 
| 1067304 | Environment parameter for substance volume tracking | 
| 1063715 | Runtime error in substance volume tracking | 
| 1020462 | Recommendations for selection criteria | 
| 945038 | Substance volume tracking: Class and char. do not exist | 
| 905726 | Substance volume tracking in SAP EH&S |