Acceptance of installation certificate permits RAs to waive penalty where installation occurred within prescribed period subject to no investigation. Regional Authorities may accept installation certificates under the EPCG Scheme without imposing a penalty as a one time relaxation for authorizations issued up to 31.03.2015, provided the capital goods were installed within the prescribed period and the EPCG authorization is not under investigation or adjudication; the relaxation is available until 31.03.2019 and penalties already paid will not be refunded.