The following information appears on the DoHA website:

There will be a systems outage from 9pm Friday 1 March to 12 noon Saturday 2 March 2019 (AEDT) unless noted otherwise.

The following systems may be unavailable during this period:

  • ImmiAccount
  • eLodgement (Online visa and citizenship applications)
  • My Health Declarations (MHD) service
  • eMedical
  • Visa Entitlement Verification Online (VEVO)
  • LEGENDcom
  • Australian Trusted Trader
  • Employment Suitability Clearances – unavailable until 1am Sunday 3 March
  • Detention Visitor Application – unavailable until 1am Sunday 3 March
  • APEC Business Travel Card (ABTC)
  • Humanitarian Entrants Management System (HEMS)
  • Adult Migrant English Program Reporting and Management System (ARMS)
  • Education Provider Report (eBIT)
  • Visa Pricing Estimator

If you receive a 'Service Temporarily Unavailable' error message during this time, please try again after the outage period. We apologise for any inconvenience.

Source: https://www.homeaffairs.gov.au/news-media/archive/article?itemId=124