Improperly designed and executed MEPF and IBMS projects further raise challenges like – hard and soft clashes in spatial co-ordination; multiple parts not functioning effectively together as a single system; disconnected testing and maintenance procedures in complex systems; use of components with specification mismatch, difficulty of serviceability and upgradability of systems, poor energy efficiency, delays in receiving clearance for commissioning, unnecessary retrofitting, loopholes resulting into ad-hoc and ongoing compliance issues, and else.