Regarding to this measurement you have issue with, I think at we keep test limits as we have today. I don’t know how your test equipment is configured, maybe cables is too long or something like that that cause voltage drop.
If your measurements is 23,66 V and LINAK tolerance is +/- 0,3V in tori you are in the limit range. Tolerance is in one decimal after “,” and measurement is in two decimal after “,”. If you round up so your measurement is 23,7 V J.
You are welcome to contact me if you have any questions.