Transitional Input Tax Credit: entitlement and conditions for claiming VAT credits on stock, capital goods and invoices. Registered persons (excluding those under section 10) may credit Value Added Tax carried forward under existing law into the electronic credit ledger on the appointed day, subject to exclusions for credits not admissible under this Act, failure to have furnished returns for the six months before the appointed day, and certain unsubstantiated Central Sales Tax claims; unavailed input tax credit for capital goods and VAT on inputs held in stock are claimable where admissible under both laws, accompanied by prescribed invoices or documents issued within twelve months, with prescribed calculation and procedural requirements.