Solution : https://service.sap.com/sap/support/notes/539539 (SAP Service marketplace login required)
Key words : 
20 -> binary patches -> sap kernel -> database independentthe sar archives, /cluster/server/additional-lib/<java parts>, command 'sapcar -xvf <archive, os-independent java components, operating-system-dependent libraries, sap j2ee engine environment, abap kernel direactory, sar solution patches, /additional-lil/ directory, sap service marketplace
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