Best practices in internal auditing emphasize the importance of follow-up on engagement outcomes to ensure that agreed-upon actions are implemented and effective. According to Standard 2500 - Monitoring Progress, the chief audit executive must establish and maintain a system to monitor the disposition of results communicated to management. This ensures that corrective actions are taken and that the internal audit function fulfills its role in improving the organization's governance, risk management, and control processes. Allocating resources for follow-up is crucial to maintain accountability and support continuous improvement.
Reference:
Institute of Internal Auditors (IIA), International Standards for the Professional Practice of Internal Auditing (Standards), Standard 2500 - Monitoring Progress.