Symptom

The PrT assignment LUCE fails with an error message:
"Error on PrT assignment: The procedure failed due to insufficient free main memory (RAM)."

Cause

Possibly the use of many kernels leads to an excessive RAM use in a concurrent situation.

Solution

Recommendation: The Procedure scales at best using 8 kernels:
https://cgi.ptvgroup.com/vision-help/VISUM_2025_ENG/Content/1_Benutzermodell%20IV/1_5_Ueberblick_ueber_die_IV-Umlegungsverfahren.htm
("Overview of the PrT assignment procedures")