Hi Chia-Hao,

Welcome to Box Community and glad to help! 

We've created a new case and a member of our team will contact you through email, please keep an eye out. 

Thanks for posting!

What is the resolution for this? I am having the same issue.

I figured it out, for those of you looking for solutions my problem was this.

Restrict Ownership Transfer

Determines whether non-admins can transfer ownership of a file or folder to external collaborators and move a file or folder owned by your enterprise to a folder owned by an external account. Select this option to prevent ownership transfer of a file or folder to external collaborators.

Admin and co-admins of your account will still be able to transfer ownership to external collaborators.

The default state is cleared.

I was impersonating a user trying to transfer ownership to another user account. I was able to transfer to a co-admin account and transfer a second time to my final owner.