OAuth 2.0 Certificate Expiration Notification:
With the NetSuite 25.2 release, administrators of accounts that use OAuth 2.0 client credentials flow certificates will receive an email indicating that the certificates are about to expire. The certificate expiration notification is sent based on the following rules:
■ NetSuite sends a notification for certificates expiring in two months, one month, or 14 days.
■ If more certificates for the same account expire on the same day, they’re included in one notification.
■ NetSuite doesn’t send notifications for revoked certificates.
■ NetSuite doesn’t send notifications for certificates uploaded with validity shorter than two months.
All administrators in the account receive the notification.
You must update the expiring certificate to ensure the integration keeps working properly.