Two things still to confirm.
1. The fumigation licence printed in the header is Form VI-C, Regn. 1515/S(P), valid to 31 December 2026. The old invoice printed IN-205/MB, which lapsed in June 2026.
2. Competent Pest Control Corporation India still has placeholder GSTIN, PAN, TAN and bank details. Invoices for that entity will refuse to pass checks until those are filled in.
Where your data lives. Currently: .
If this says "This computer only", sync is not switched on yet and each machine keeps its own separate list. The setup guide that came with this file explains how to turn sync on. It takes about half an hour and costs nothing.
Once sync is on, everyone works off one invoice list and the database itself refuses to let two people issue the same invoice number.
Printing. Press Save and print, then in the browser print dialog choose Destination "Save as PDF", Paper size A4, Margins "Default" or "None", and switch on "Background graphics" so the navy headers print. Chrome and Edge remember these settings after the first time.