HCP Anywhere dropped support for AD 2003 in v1.3 release based information that Microsoft is going to no longer support this version. We don't have plans to qualify AD 2003 with HCP Anywhere.
HCP Anywhere v1.2 did support AD 2003 and there have been no major changes in this area. Customers could potentailly use AD 2003 in a PoC environment. However, please keep in mind that AD 2003 is not supported and it would be in their best interest to upgrade to a newer version of AD.