Audit Checklists See the links below for instructions on specific PEG Audit Checklists. Report transmittal (100) Modified Opinion (306) Worksheet - Time budget (450) Materiality (420) Service Organizations (516) Understanding accounting estimates and related disclosures (513) Worksheet — Final analytical procedures (655) Engagement scoping - Group Audit (590.600) Letter to a component auditor (JZLCA1-5) CAS 315