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A set of assessment objectives and an associated set of assessment methods and assessment objects.
NIST SP 800-137 under Assessment Procedure
NIST SP 800-137A
NIST SP 800-53A Rev. 5 under Assessment Procedure
A set of activities or actions employed by an Assessor to determine the extent that an issuer control is implemented.
NIST SP 800-79-2 under Assessment Procedure