Solution : https://service.sap.com/sap/support/notes/1388649 (SAP Service marketplace login required)
Key words :
source code corrections, current parameter version, 013 client014 variants converted, obsolete variants, current clients, report rfpaym_unicode_variants, executed automatically, unicode conversion, program umg_add_prep_step, started manually
Related Notes :
1319517 | Unicode Collection Note |
1278126 | Problems with PMW variants / change to Unicode |