Exactness ValueMeaning

EXACT

User can pay only the exact amount as mentioned in the bill.
EXACT_DOWN
User can pay the exact amount as mentioned in the bill or any amount lower than that upto a certain minimum limit.
EXACT_UP
User can pay the exact amount as mentioned in the bill or any amount higher than that upto a certain maximum limit.
RANGE
User can pay any amount between the mentioned minimum limit and maximum limit.
ANY
User can pay any amount between an optionally preset minimum limit and maximum limit.