<h1>HSN code mapping strengthens ministerial custodianship and streamlines trade and manufacturing policy for better negotiations.</h1> The Guidebook maps 12,167 HSN codes to 31 Ministries and Departments to establish custodianship, streamline regulatory processes, and reduce residual misclassifications. Developed through value chain analysis, AoB review, inter ministerial consultations and industry engagement, it aims to support import substitution, trade negotiation clarity, and translation of policy into actionable outcomes. The Guidebook's operational guidance-framed as Manufacture in India, Strengthen Brand India, and Make for the World-targets sectoral policy alignment, value chain strengthening, workforce development, and trade facilitation to promote data driven manufacturing and ease of doing business.