Manage a unique identifier on positions

Summary

How we can manage a unique identifier on positions that are not managed manually outside of the system?

Content

We have discovered that position code is not system derived in Cloud which will make position management, budgeting, and recruiting difficult.

 I understand that there is a system derived Position ID that is behind the scenes.  

Is not possible to have the position code populated with the system derived Position ID.  Have you come across this before?  Do you have any ideas as to how we can manage a unique identifier on positions that are not managed manually outside of the system?