What is a valid location for playing units, given that the updated Core Rules removed the definition?

Ruling: The removal of the definition for "valid location" was an error in the rules update. Units should be played to locations the player controls on the board (specifically battlefields they control), as stated in the previous version.

Nuances:

• The numbering gaps (462.8.h to 649) were intentional to allow for adding new rules in the future
• The current rulebook incorrectly references "valid Location" without defining it
• The previous version correctly specified "a Location the player Controls on the Board"