It's explained quite clearly in https://gdpr-info.eu/art-17-gdpr/ https://gdpr-info.eu/art-17-gdpr/ "a. the personal data are no longer necessary in relation t

It's explained quite clearly in https://gdpr-info.eu/art-17-gdpr/ https://gdpr-info.eu/art-17-gdpr/ "a. the personal data are no longer necessary in relation to the purposes for which they were collected or otherwise processed;" Because the data is still necessary, you don't have to delete it.