Thanks Rick for the clarification!. I have a follow-up question if I may ask. We are using a seed value of 12345 and feeding it into call streaminit to initiate a random number generation program in SAS® Version 9.4 (based on the Hybrid 1998/2002 32-bit Mersenne twister). We are using the below code and we are using the PROC PLAN to create the randomization schedule.
user_seed=12345;
call streaminit(user_seed);
rand_num = ceil((2**31 - 1)*rand("uniform"));

When I used the 2**32 instead, it was giving me a SAS ERROR "The SEED value exceeds the largest integer that can be stored on this machine" which prompted me to change it to 2**31. So is 2**31 a max seed value limitation for PROC PLAN?. Hope my question make sense.