Form GST TRAN 1 requires detailed reporting of transitional ITC, stock holdings, and related supplier/invoice particulars. Form GST TRAN 1 requires declaration of GSTIN and confirmation of return filing, and detailed quantification of tax credits carried forward from existing laws into the electronic credit ledger. It separates central tax (Cenvat) and State/UT tax (VAT/entry tax) credits, lists unavailed capital goods credit with invoice and supplier identifiers, and sets out disclosures for inputs and finished goods in stock, distinguishing documents supported and unsupported items. The form also captures transfers of centralized Cenvat balances, goods with job workers and agent held goods, and concludes with a verification by an authorised signatory.