Manual filing of GST zero-rated refund claims now required: form RFD-01A, ARN, ledger debit, and set timelines apply. Manual filing and processing of refund claims for zero-rated supplies is mandated until the portal module is available. Export refunds via paid IGST use the shipping bill as the application upon filing export manifest/report and valid return. Suppliers claiming refund (including SEZ cases and unutilized ITC) must file FORM GST RFD-01A on the portal to obtain an ARN/debit proof and submit printouts with documentary evidence to the jurisdictional proper officer. Acknowledgement (FORM GST RFD-02) is within 15 days, provisional refund within 7 days, and final order within 60 days; deficiencies, re-credit, and inter-authority communications follow prescribed Forms and registers.