Do the auditors question the services live adopted by the client for plan assets or do they accept the services lives without investigation?

Auditors typically do investigate the service lives adopted by a client for plan assets rather than accepting them at face value. They assess whether the assumptions used for determining service lives are reasonable and consistent with industry practices. This involves reviewing supporting documentation, discussing with management, and potentially benchmarking against similar assets. Ultimately, the auditors aim to ensure that the estimates are accurate and reflective of the actual asset usage.