We are trying to update Person ID for a subject to a value that exists in another study and it won't let us, it says:
"Person ID has been used by another subject, please choose a unique one.
Another subject has been assigned this Study Subject ID. Please choose a unique identifier."
There is no problem to use an existing Person ID when enrolling the subject. The problem only occurs when editing the subject record.
Has anyone found any workarounds to this?