This is makeindex, version 2.15 [TeX Live 2016] (kpathsea + Thai support).
Scanning input file CaseStudy_StreamlineB2B.idx....done (3 entries accepted, 0 rejected).
Sorting entries....done (5 comparisons).
Generating output file CaseStudy_StreamlineB2B.ind....done (10 lines written, 0 warnings).
Output written in CaseStudy_StreamlineB2B.ind.
Transcript written in CaseStudy_StreamlineB2B.ilg.