added note to Manage enrollments -- Portal

Author: JimacoMS4

articles/iot-dps/how-to-manage-enrollments.md

@@ -216,10 +216,15 @@ To remove an enrollment entry:
 
 4. In the **Settings** menu, select **Manage enrollments**.
 
-5. Select the enrollment entry you want to remove. 
+5. Select the enrollment entry you want to remove.
 
 6. At the top of the page, select **Delete**.
 
 7. When prompted to confirm, select **Yes**.
 
 8. Once the action is completed, you'll see that your entry has been removed from the list of device enrollments.
+
+> [!NOTE]
+> Deleting an enrollment group doesn't delete the registration records for devices in the group. DPS uses the registration records to determine whether the maximum number of registrations has been reached for the DPS instance. Orphaned registration records still count against this quota. For the current maximum number of registrations supported for a DPS instance, see [Quotas and limits](about-iot-dps.md#quotas-and-limits).
+>
+>You may want to delete the registration records for the enrollment group before deleting the enrollment group itself. You can see the registration records for an enrollment group on the **Registration Records** tab for the group in the portal. You can retrieve and manage the registration records programmatically using the [Device Registration State REST APIs](/rest/api/iot-dps/service/device-registration-state), equivalent APIs in the [DPS service SDKs](libraries-sdks.md), or the [az iot dps enrollment-group registration commands](/cli/azure/iot/dps/enrollment-group/registration) in the Azure CLI.