Hello,
I was creating an automation when Project 1 is transitioned to closed it will automate to create and linked project 2 and assignee field will carry over to project 2.
Some work type works, but there are some work types having this issue, please see error on audit log below: 
The assignee field isa enable to the work type: here is the automation I created.

Please let me know if I have missed something that the automation is having some errors.