CBEC clarifies on list of documents required for Know Your Customer (KYC) norms; If any one document ( as listed in Board Circular No 9/2010-Cus) contains both ‘proof of identity’ and ‘proof of addresses’, same would suffice for KYC verification purpose; Also, inlcudes "Addhar Card" in documents list required for KYC verification

Customs Circular No. 07/2015-Cus dated February 12, 2015
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