Change of SEZ sector: structured application process requiring approval particulars, reasons, declaration, and commissioner recommendation. Form C3 under rule 6A(I) prescribes the application process for Developers seeking to change the approved SEZ sector, requiring developer details, Letter of Approval data, current and proposed sectors, dates of grant and expiry, notification status, reasons for change, and a declaration accepting potential conditions and consequences for false statements. The form includes a recommendation block for the Development Commissioner and applicant authentication fields, creating a structured administrative record for sector-change requests.