 Common IWMS features that support maintenance management include asset management, work requests, preventive maintenance, work order administration, warranty tracking, inventory management, vendor management and facility condition assessment.This area covers activities related to the measurement and reduction of resource consumption (including energy and water) and waste production (including greenhouse gas emissions) within facilities.Common IWMS features that support sustainability and energy management include integration with building management systems (BMS), sustainability performance metrics, energy benchmarking, carbon emissions tracking, and energy efficiency project analysis.