As the title says, the cheat to get a sim's ID for a sim that has more than the standard first & last time results in the erro
sims.get_sim_id_by_name() got multiple values for argument '_connection'
A workaround is to go into CAS and change the name so only first & last name remains, save to live mode and run the cheat with first & last name again. This will give the sims ID. Then we can rename the sim.
Edit By Crinrict: Adjusted Title