An item cannot be deleted from the campaign under the following conditions:
a) The Protected from Removal option is On.
1. Go to Content Library > Manage Campaigns.
2. Click the Manage Campaign Items icon for the proper campaign.
3. Find the item to be removed, click the Edit Item icon.
4. Uncheck the Protected from Removal option and confirm the choice.
5. Delete the item in the normal way.
b) The scheduled or played back sequence contains the item for the removal.
Remove the sequence from the Schedule and delete the item in the normal way.