1. The Definitions
* Currency: Used for money. Allows for Currency Conversion (FX).
* Non-Currency: Used for units or headcount. No FX applied.
* Date: Stores calendar dates for "days between" calculations.
* Text: Stores words or descriptions. No math.
* Percentage: Stores ratios (e.g., 0.05 as 5%).
2. Why it Matters
It acts as a gatekeeper. If you set an account to "Numeric" and a user tries to type "Good" into Smart View, the system will reject it.