Epcg items not installed in the exporter premises

We have Export thro Merchant Exporter under CT-1 at the time of SB we indicate EPCG No. for EO obligation, EPCG Lic in the name of our Group company all the Import CG installed @ original EPCG holder. But our Export Item indicated in this EPCG. Query: DC customs deny sign the SB reason EPCG items not installed in the Exporter premises. Export obligation may also be fulfilled by exports of other goods manufactured by the same firm or company, which has the EPCG authorisation. Please advise is there any notification/circular