anyone else getting nothing showing up on the 'customer scheduled maintenance' page?

A blank Customer-Scheduled Maintenance page usually means NetSuite has not assigned any upcoming maintenance that can currently be viewed or rescheduled. The page is available only to the Administrator role; sandbox maintenance can appear in Production, while the Sandbox page itself is view-only. If an administrator received a maintenance notification but nothing appears, check the page from the Production account using the Administrator role. If it is still blank, it is likely an account-specific display issue and should be raised with NetSuite Support.

Turns out it was a NetSuite bug:

{
  "timezone_text": "BST",
  "current_user_date": "07/27/2026 02:08:06 PM",
  "return_values": null,
  "response_success": false,
  "response_err_msg": "Cannot invoke \"com.netsuite.controlplane.jcontroller.maintenancemetadata.storage.model.fields.batch.BatchWindowStartDateField.getValue()\" because the return value of \"com.netsuite.controlplane.jcontroller.maintenancemetadata.storage.model.domain.BatchMaintenanceDomain.getWindowStartDateField()\" is null",
  "response_err_code": null,
  "timezone_longtext": "British Summer Time",
  "timezone_gmt": "GMT0:00"
}