As of NetSuite 2024.1, support for the Outbound Single Sign-on (SuiteSignOn) feature ended in non
production accounts, such as sandbox accounts. As of NetSuite 2025.1, this feature will no longer be
supported in production accounts.
More proactive feature change notifications will be sent to prepare you for this change before the release
of NetSuite 2025.1.
As an alternative to SuiteSignOn, you can use the NetSuite as OIDC Provider feature. For more
information, see the help topic NetSuite as OIDC Provider. Consider switching to the NetSuite as OIDC