Vauxhall CORSA Owner's Manual page 297

Service and maintenance 295
Confirmations
Confirmation of service is recorded in the Service and warranty booklet. The date and mileage is completed with the stamp
and signature of the servicing workshop.
Make sure that the Service and warranty booklet is completed correctly as continuous proof of service is essential if any
warranty or goodwill claims are to be met, and is also a benefit when selling the vehicle.