Solution : https://service.sap.com/sap/support/notes/550941 (SAP Service marketplace login required)
Key words :
terms diffexpcust diffexpgen diffexpmod reason, /usr/sap/put/log/sapecc 620, sap service marketplace software center, /usr/sap/upgrade/exe directory, contact sap support, r3trans transport program, upgrade phase, r3trans patch, corrected r3trans, r3 release 3
Related Notes :
| 545852 | Upgrade to Basis Release 6.20 SHADOW_IMPORT_* |
| 19466 | Downloading SAP kernel patches |