Solution : https://service.sap.com/sap/support/notes/1422822 (SAP Service marketplace login required)
Key words :
i18n table process information, table process type, reducing data volume, bc-i18-uni, encounter problematic tables, table processing information, unicode conversion process, language assignment reason, terms unicode conversion, vocabulary maintenance - assigning
Related Notes :
1319517 | Unicode Collection Note |
679456 | Reducing data volume before Unicode Conversion |