Microsoft Exchange Server 2016 PowerShell Cookbook - Fourth Edition

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You can create a retention policy without initially linking any retention tags to it. You can also go back and add retention tags to a policy later if needed. If you need to add or remove tags to an existing policy, you can use the Set-RetentionPolicy cmdlet. For example, to add the Sales-Inbox and Sales-DeletedItems retention policy tags to the Sales-Users retention policy, your command would look like the following:

    Set-RetentionPolicy Sales-Users '
    -RetentionPolicyTagLinks Sales-Inbox, Sales-DeletedItems 

The thing to note here is that this command will overwrite the policy's current tag list. If you need to add tags and keep the policy's existing tags, you will need to use a special syntax. For example, run the following ...