The AISEP Assurance Continuity (AAC) process allows product or system vendors to conduct discrete maintenance or re-evaluation activities to extend their original Common Criteria (CC) Certificate. To be considered for AAC maintenance vendors must have had the product or system originally evaluated by an AISEF and provide an Impact Analysis Report (IAR) and covering letter to the Australian Certification Authority (ACA). If the proposed changes are deemed minor by the ACA, the AAC application can be considered a maintenance update. Should the proposed maintenance or changes impact the development environment assurance measures of the product or system however, an AISEF will need to be engaged to conduct a subset evaluation of the applicable assurance components contained in the original Security Target (ST). If the proposed changes are deemed major by the ACA, the product or system vendor will be notified and given the option of submitting the product or system for re-evaluation by an AISEF.