I don’t know. The article that Mike posted:
https://netsuiteprofessionals.slack.com/archives/C29HR0BFG/p1723917906065379 explains the changes that NetSuite made. The “SC Configuration” custom record type needs to be updated to set the new fields for external & unauthenticated user access. Unfortunately, the custom record type is locked, so we can’t change it. NetSuite needs to update the bundle.