Solution : https://service.sap.com/sap/support/notes/181132 (SAP Service marketplace login required)
Key words : 
customer & partner --> online services --> sap online correction support --> download --> add-, customer & partner --> online services -> online sap correction support --> download --> add-, display/define patch queue --> select component 'ehs', patch queue display/define --> select component 'ehs', sap environment health & safety --> ehs 0202b0405b --> sapkipeb01, sap environment health& safety --> ehs 0202b0405b --> sapkipeb02, sap environment health & safety --> ehs 0202b0405b, support package 0001            hot package    crt--------------------------------------------------------------sapkh45b04    sapkipeb90   ehs 2, /3 frontend --> service --> sap patch service --> sap add-, precondition                    level            hot package                spam------------------------------------------------------------------------ehs 0205b0405b/0001  03+04 sapkipeb01
Related Notes : 
       
| 153233 | EH&S 2.2B Patch Level: Additional documentation | 
| 122400 | EH&S installation: Composite SAP Note | 
| 118314 | Installing the interface to a separate EH&S | 
| 111841 | Known deficiencies in EH&S 2.2B | 
| 83458 | @19@OCS Info: Patch download from SAP Service Marketplace |