They are of two types: (i) primary and (ii) auxiliary Commercial primary documents are eight which have to form part of the negotiable documents, to be sent to the buyer. These are (i) invoice (ii) packing list (iii) certificate of Insurance (iv) certificate of origin (v) bill of lading/airway bill (vi) bill of exchange/bank draft (vii) shipment advice, and (viii) certificate of inspection/analysis. Commercial auxiliary documents are those which assist in preparation of the primary documents and include: (i) proforma invoice/quotations (ii) order confirmation (iii) application for inspection (vi) application for Insurance i.e., Insurance declaration (v) shipping instructions to the forwarders (vi) shipping order from carriers (vii) mate’s receipt from shipping Agent (viii) application for certificate of origin (ix) application for opening letter of credit, and (x) letter to bank submitting documents for negotiations.Regulatory documents are those which have to be presented to different government departments in their prescribed formats. These include: (i) gate pass-Central Excise (ii) AR 4/AR 4A forms (iii) shipping bill for export (iv) port copy of export application (v) gate pass for entry of goods in port (vi) GR/EP/PP forms (vii) freight payment certificate (viii) Insurance premium payment certificate and (ix) port copy of bill(s).Ex turpi causa non oritur action : No (right of) action arises out of an immoral cause.