Has anybody attempted mapping UNSPSC Commodity Codes to IT Resource Sub-Towers?  What I am looking for is a systematic method of mapping External Labor and Outside Services supplier purchase orders to IT Resource Sub-Towers to both reduce churn and improve consistency in mapping.  Before doing this on my own I thought I would check if there was a existing mapping that would improve the overall consistency across benchmarking.

Thank you in advance for any knowledge, experience and/or wisdom you can offer.

Kerry