Error is shown when trying to set the audit retention period as more than six months

Steps to Reproduce

1. Navigate to https://<instance>.atlassian.net/wiki/admin/auditlogging.action
2. Click the gear icon in the upper right
3. Set more than 6 months (7 months ~ 3 year) and click Save

Expected Results

User is able to set the retention period, as described at https://confluence.atlassian.com/confcloud/audit-log-802164269.html

By default, events are removed from the log after 90 days. You can choose to keep events for longer in the log settings(up to three years).

Actual Results

The following error is shown

Error updating audit retention period
com.atlassian.confluence.api.service.exceptions.BadRequestException: Invalid retention period

Workaround

There is no available workaround at the moment.