Solution : https://service.sap.com/sap/support/notes/31974 (SAP Service marketplace login required)
Key words :
upgrade directory /usr/sap/put/log, additional key words func, utilities -> version maintenance, start transaction se37, function modules found, overwritten function modules, function modules, transaction spau, file custexp, overwritten
Related Notes :
| 29346 | Additional Info: Upgrading to 3.0B |