ML Drill-Down Report show text not value for some characteristics (like SD Document)

Hi Experts,

When I run the ML Drill-Down Report with output type "Object list" using t-code KKML0, there are some characteristics that show text not value (like SD Document, Category and Process Cat., as red rectangles in the picture below)

Could you please let me know how to show the value for these characteristics in the report?

Thank you for any help you can provide.

ere is our installed product version "SAP S4/HANA ON PREMISE 1709 02 (05/2018) FP".

Also I found that the report parameters will add a tab "Special sort" automatically if adding one of these three characteristics to be the characteristics of the report using t-code KKML2. I'm not sure whether relevant to the issue or not.

All the best,

HSUEH-JEN LU (Eric)