Refund claims clubbing across financial years now allowed, with refunds apportioned by original cash and credit payment modes. The circular removes the restriction on clubbing refund claims across financial years, clarifies that ITC accumulation from a later rate reduction on the same goods does not constitute inverted duty structure for refund, and confirms refunds will be apportioned between cash and credit in the proportion originally used, with credit-portion re-credited to the electronic credit ledger. It limits refundable accumulated ITC to invoices uploaded by suppliers and reflected in FORM GSTR-2A, and requires HSN/SAC reporting in Annexure-B to identify capital goods and input services.