Net Foreign Exchange requirement mandates positive NFE for EOUs, with duty exemptions conditioned on compliance and monitoring. Chapter 6 prescribes the approval, administration and compliance framework for EOUs, EHTPs, STPs and BTPs, requiring LoP/LoI and execution of a Legal Undertaking with digital contact details; permits duty-free import and domestic procurement subject to Customs/Excise procedures and SION-based utilisation; establishes Net Foreign Exchange (NFE) as the key compliance metric with formulae, inclusions and amortisation rules; mandates monitoring, reporting and record-keeping; and empowers Development Commissioners/Designated Officers to grant approvals, extensions, conversions and to initiate penal or cancellation action for non-compliance.