In some situations, changes in certified organizations may affect the certificate itself (extension or reduction of certification scope). Certified organizations have obligation to inform AACI about changes in accordance of contract and Certification Guidelines. In cases where these types of changes happen during the 3-year period of certificate validity, procedure OP-CP-12 Certificate issue, handling and validity must be followed. AACI will review and decide whether any audit activity(s) is(are) needed. In the case of scope extension AACI will conduct additional audit in order to verify processes that affect the scope of certification. This may be conducted in conjunction with a surveillance audit.