Configurator/Failsafe
Global setting
This mean that UMS will stop importing data if there is more than a 20% decrease of users in the current import. It will start again if the next GetStudents has less than a 20% decrease in users.
This default limit can be change in UMS configurater under Settings -> Failsafe.
You can also set a specific failsafe setting on a template. This also includes the option to disable it for a template.
Failsafe will normally happen around semester change since a lot of users will leave the school.
Template setting
Failsafe enabled
Uncheck this to disable failsafe for templates with this setting. This is not recommended.
User percentage
Increase of the decrease the % of missing users a template can have before failsafe activates.
Entra Cloud Sync deletion threshold reached
Just like UMS has a failsafe feature, so does Entra, when using their Entra Sync.
The default "deletion threshold" is 500 objects. That means if you allow a failsafe in UMS with more than 500 users missing and you use Entra Sync, this could be an issue.
To allow the deletion in Entra you need to log into your tenant and select "Entra ID", then you must locate the "Entra Connect" page.
Select "Cloud Sync" and you will get a list of your configurations. Here it will display what configuration has the issue, as it is no longer "healthy"
You will most likely get two options here, "Allow deletes" or "Clear quarantine"