Following are the common documents required to be submitted to Indian Customs and other authorities.
Authority Letter in favour of Custom House Agent
Know Your Client (KYC).
Certificate of Importer Exporter Code Number (IEC)
Certificate of Permanent Account Number (PAN)
Certificate of Industrial Licence
Registration Certificate of GST
Registration-Cum-Membership Certificate (RCMC)
PQ Online Registration Letter
First import document covering letter for Air
First import document covering letter for Sea
Please note that the concerned authorities can call for any additional documents depending on the nature of goods and classification / notification claimed.