When adding a team permission role, I got an error message: "Permission role with that name already exists".

Can I re-use the same team permission role? How do I go about it?

It is true that a team permission role is unique to one team and cannot be re-used in other teams. Our recommendation is to add the team name at the end of the permission role to differentiate it from others. For example "Approvers TeamA", "Approvers TeamB", and so on.