Effect on Certificates: The valid certificate pdf will never change It will require an update procedure (Revision / Replacement) to display the new Customer Name in the pdf. The internal (CBW) and external (Certificate Explorer) display of the customer data related to the change will change automatically after the change of the customer name got applied. It is to be clarified internally with the involved Certification Bodies if re-issuing the certificate is needed, before changing the name of a customer.