This document provides information about ISO 9001 and SIA ACS accreditation for security companies, including the application process and requirements. It outlines the key steps to become approved, such as creating a documented quality management system, employee screening, completing site files, and data capture. It recommends conducting internal audits and management reviews before the external audit. Several accredited certification bodies are listed that can perform the external audit. Tips are provided that the audit aims to help businesses comply, and most issues can be resolved during the audit.