I am working with SharePoint 2016 On Prem. My goal is to add an Information Management Policy to a document library at the site level that deletes all files older than 30 days.
When I create the Document Library, there already exists a Site Collection wide policy that is set for the parent content type. This policy defines only auditing, and helps ensure site collection wide auditing is performed for documents for management purposes. It does not have retention specified.
One of the side effects of this policy, is when I go to my local site and try to add a Information Management Policy with retention, I get the message:
You cannot change the policy settings for this content type because it inherited the settings from its parent content type or a site level content type. To change these policy settings, change the settings for the parent of this content type.
My fear is if I change the settings to the parent, and add retention to the parent policy, that this will be applied to all document libraries of the site collection. I don't want this applied site collection wide, just at the one document library at the site.
Is there a way to get a local retention policy applied to a document library that already has a site collection wide policy that specifies auditing?