Avamar: Backup retentions are longer than expected due to the "minimal retention" setting

Client (or group) backups have a longer expiration than the set retention period.
For example, the retention is set to 14 days, but the backups are created with a longer expiration such as 60 days.

The configuration has been verified as correct.

The "Minimal Retention" setting is active and is set to retain backups longer than the retention period chosen for the client or group.

• Enables you to enforce a minimum basic retention setting across an entire site 
• For example, you can keep all backups for at least 90 days regardless of what other retention policies specify
• This feature is intended to address the need of some enterprises to enforce site-wide minimum retention standards regardless of what individual organizations might decide to implement with other retention policies
• The Minimal Retention policy is a global system object that controls only the minimal retention setting. Therefore, you cannot assign the Minimal Retention policy to a group

1. Check the minimal retention setting in the UI:
(Tools, Manage Retention Policies, Minimal Retention, Edit):

2. If it is higher than the required retention, either decrease the value or disable the setting.