A DIACAP review has to be executed for every new system, for every major change to an existing system, and at least every 3 years for any currently accredited system.
DIACAP replaced DITSCAP as the process for certification and accreditation of DoD information systems. DIACAP supersedes DITSCAP.
DIACAP is DoD Instruction 8510.01. In that respect, SOME DoD instructions fall under DIACAP, but most DoD instructions have nothing to do with DIACAP.
DIACAP Knowledge Service.
DIACAP is established by DoD Instruction 8510.01.
According to DODI 8500.2, the "DIACAP team members" are defined as: E2.25. DIACAP Team. Comprised of the individuals responsible for implementing the DIACAP for a specific DoD IS. At a minimum the DIACAP Team includes the DAA, the CA, the DoD IS program manager (PM) or system manager (SM), the DoD IS IA manager (IAM), IA officer (IAO), and a user representative (UR) or their representatives.
No - DIACAP (DoDI 8510.01) superseded DITSCAP (DoDI 5200.40) in 2006.
The first DIACAP document that lists the team members will usually be a document called the System Identification Profile (SIP).
DIACAP requires you to review your IA posture at least annually for as long as the system is in operation (or every 6 months if it is a MAC I system).
According to DODI 8500.2, the "DIACAP team members" are defined as: E2.25. DIACAP Team. Comprised of the individuals responsible for implementing the DIACAP for a specific DoD IS. At a minimum the DIACAP Team includes the DAA, the CA, the DoD IS program manager (PM) or system manager (SM), the DoD IS IA manager (IAM), IA officer (IAO), and a user representative (UR) or their representatives.
source for DIACAP resources and knowledge services
Three confidentiality levels are used in DIACAP: Public Sensitive Classified
According to DoDI 8510.01, Enclosure 2: E2.25. DIACAP Team. Comprised of the individuals responsible for implementing the DIACAP for a specific DoD IS. At a minimum the DIACAP Team includes the DAA, the CA, the DoD IS program manager (PM) or system manager (SM), the DoD IS IA manager (IAM), IA officer (IAO), and a user representative (UR) or their representatives.