Solution : https://service.sap.com/sap/support/notes/1332959 (SAP Service marketplace login required)
Key words :
rule architect-->utilities-->import rules, rar shows error message, rule import text file, terms complicance calibrator, future support pack, line/row empty, rule import, import rules, importing rules, rules successfully
Related Notes :
1592012 | System Name not defined in SLD causing issues in RAR |
1081562 | How-to Export Rules in Development and Import to Production |