When the new trading system (KRX) is implemented, existing futures contract codes in the derivatives market will remain unchanged until expiration. Upon expiration, newly issued futures contracts will be assigned codes based on the new naming conventions.

Example:
VN30F2504 → 41I1F4000
Code breakdown:
4: Type of derivative security
1: Derivatives group (1 = Future, 2 = Future Spread)
I1: Underlying asset (VN30 = I1, GB05 = B5, GB10 = BA, VN100 = I2)
F: Expiration year encoded using 30 characters from 0 → W (excluding I, O, U to avoid confusion)
4: Expiration month encoded using 12 characters from 1 → C
000: Derivatives product identifier (Futures = 000)
To facilitate customer tracking and clarity, VPS will retain the previous futures contract codes and append additional information reflecting the new derivatives security codes.