Agent input tax credit entitlement when capital goods are held by agent, subject to registration, declaration, invoice timing, and credit reversal. Agents may claim input tax credit for capital goods of a principal lying at the agent's premises on the appointed day if the agent is a registered taxable person, both parties declare the stock in the prescribed manner and time, invoices were issued within the preceding twelve months, and the principal has either not availed input tax credit or has reversed any credit already availed to the extent of such capital goods.