Due to the high trade values and the market practice of settling deals bilaterally, participants generally set a maximum risk exposure vis-a-vis all potential counter parties in the market to ensure that they do not take any undue risk exposure against any particular counter party. Recognising this feature of the market, the WDM trading system provides for two kinds of entities on the segment: Hence this market segment has a two-tier system that recognizes Trading members and Participants and their roles have been clearly explained in Exchange guidelines.