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D2A system and authentication requirements


D2A 6.0

  • 4GB of RAM
  • 5GB available hard disk free space
  • 1GHz or faster, (x64) processor

Supported operating systems*

Note: D2A version 6.0 (and above) no longer operates on a 32-bit operating system. Consult your IT department if you are unsure of your current system’s specifications.

  • Windows 8.1 (64-bit)
  • Windows 10 (64-bit) (versions that have not yet reached end of service)

* Although D2A may work with other operating platforms (including Windows XP, Vista, 7, and tablet-specific platforms), these are not supported by APRA.


    • Write access to the directory specified by the TEMP environment variable and the D2A installation directory
    • Internet access

    Security authentication

    D2A uses the ATO’s myGovID machine credentials for authentication. Administrators need to complete three steps to set up and administer their own myGovID and create a machine credential. The links given below are to ATO published materials.

    1. Obtain a digital identity2. Link ABN and authorise others3. Create a machine credential
    D2A administrators (Principal Authority and
    Machine Credential Administrator) must set up their digital identity and obtain a myGovID.
    Entities need to ensure that their business ABN is linked and administrators are authorised in RAM.For D2A, a Machine Credential Administrator will need to create a
    machine credential (this is not required for Extranet).
    MyGovIDRelationship Authorisation Manager

    Machine credential for business software user

    Guide: How to install a machine credential

    Technical issues?

    1. Please refer to the Common D2A errors page.
    2. Additional information can be found in the: 
    3. Log a support request with the D2A Help Desk at
    4. For urgent issues call +61 2 9210 3400 between 9am and 5pm AEST weekdays.

    Need help with myGovID?

    Refer to the ATO myGovID website.

    Need help with data validation rules?

    The D2A Help Desk cannot assist with validation errors or warnings in D2A returns. For information on validation rules and guidelines, refer to your industry's Reporting requirements page.

    For further enquiries about validation rules, please contact: