Deleting unused RDT entries

Document ID : KB000077236
Last Modified Date : 02/05/2018
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As a result of an audit, we have been asked to delete resource classes from our RDT that are not being used. Not used is classified as not containing any resource ownerships within the class. This would include a large number of RDT Resource class definitions supplied by default with TSS. Are there any reasons we would not want to delete resource classes provided by default in the RDT?
Predefined resource classes can not be removed from the RDT.