Hi,
Field Status Group is mandatory field in G/L Creation. You
use this field to define which fields are displayed when you
post business transactions to a G/L account. 
A field may have one of the following statuses.
- Suppressed
- Display
- Optional
- Required

FIELD STATUS VARIANT ARE CONFIGURED AT 4 STEPS THESE ARE 
GIVEN UNDER
1.POSTING KEY
2.A/C GROUP LEVEL
3.G/L MASTER
4.ACTIVITY LEVEL

PLEASE CORECT ME IF I AM WRONG!

BEST REGARDS,
SHYAMALENDU SINGH

Field Status group is configurad by at 4 Levels

one is1. Gl Masrer record
          a. Activity level
          b. company code level
          c. Account group

      2. custome or vendor
          a. Activity level
          b. company code level
          c. Account group

      3. Account group
          b. company code level

      4. Posting key
          b. company code level
          c. Line item leve;