Error(18694) with LVDS SERDES IP

Hello,
above quoted solutions 1 and 3 are apparently erroneous. Nothing related to error(18694) has been fixed in QPP 20.1.

As for a possible solution, see my comment in
https://community.intel.com/t5/FPGA-Intellectual-Property/SERDES-IP-not-compiling-after-migrating-to-Quartus-Pro-23-1/td-p/1448743

As long as no solution is provided by Intel, I'd use QPP18.0 (solution 4) for existing designs that can't implement solution 2.