Zero-rated supplies entitlement: IGST refund cannot be denied solely because exporter claimed higher drawback; statutory rules prevail.
The statutory refund regime treats the shipping bill as a deemed application for IGST refund on exports and allows withholding of refund only in the specific, enumerated circumstances provided by the rules. Administrative circulars cannot override the statute; availing a higher duty drawback or technical limitations in departmental systems do not, without falling within the prescribed withholding contingencies, defeat an exporter's entitlement to IGST refund for zero-rated supplies.