Officer Interface rectification for invoice and GSTIN mismatches extended and exporters must ensure accurate GSTIN and invoice details. Extension of the Officer Interface alternative mechanism permits rectification of invoice mismatch and invalid GSTIN errors for export shipping bills so affected, enabling correction of discrepancies that impede IGST refund claims; cases where PAN was entered instead of GSTIN are treatable under the same conditions, which apply mutatis mutandis, and exporters are advised to ensure identical invoice details between shipping bills and GST returns.