Have you encountered the problem that you want to make more change than allowed or that you just wonder changes how to change Azure AD Sync Threshold?
This needs to be done on the server that has an Azure Sync client.
First to find out if there is one and what is the setup?
If you want to disable this rule for some reason,
we strongly advise against it.
Then there nothing stopping if someone accidentally deleted to many accounts between two syncs.
If you want to change the Threshold to 10
Enable-ADSyncExportDeletionThreshold -DeletionThreshold 10