Vendor Self Service


About Vendor Self Service

Colorado Vendor Self Service (ColoradoVSS) is the vendor-facing component of the CORE system. Most State Agencies and many Institutions of Higher Education are posting solicitations for goods and services as well as construction notices in ColoradoVSS. Only vendors searching for competitive bid opportunities should register in ColoradoVSS at this time. Please note that it is not necessary for vendors to register in VSS to view and respond to solicitations; they are only required to register at time of awardFor a complete listing of where solicitations are being posted, please visit the State Purchasing Office website.

Key features of ColoradoVSS: 
  • Vendors can register for free and update account information
  • NIGP commodity codes are used to identify products or services offered by vendors    
  • Email notifications (for new solicitations) are sent based on commodity codes selected
  • In order to ensure the integrity of our vendor records, we verify information through Dun and Bradstreet 
  • Instructions are posted on the ColoradoVSS website in the Quick Start Guide to help all vendors access the website 


Please use the following Overview when speaking about ColoradoVSS. 

Vendor Self Service Support Center

Need assistance? Contact the Vendor Self Service (VSS) Support Center:

  • M-F 8:00 a.m. - 5:00 p.m.
  • 1-303-866-6464
  • dpa_vsshelp@state.co.us