Solution : https://service.sap.com/sap/support/notes/829264 (SAP Service marketplace login required)
Key words :
terms me51n me52n medcm 018 rollback reason, symptom version management, existing version, version relevant, table eban, message medcm018, completely undone, program error, attached correction, automatically
Related Notes :
| 931863 | ME52N: The changes could not be completely undone II |
| 792132 | EBAN, EBKN: user-defined fields are not filled |