You’ll need to use the PipeDrive Search module before you can map a person id into the Update/Create module.
You currently inserted a name into an ID field.
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
P.S.: Did you know, the concepts of about 70% of questions asked on this forum are already covered in the Make Academy. Investing some effort into it will save you lots of time and frustration using Make later!