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Established Vendors


Vendors who had been registered previously, were converted to SIGMA VSS. All active addresses, banking, and information are in SIGMA VSS. When attempting to register, vendors will receive a message to "activate" your existing account.  Contact the SIGMA Help Desk for assistance with activating your SIGMA VSS access at 517-284-0550 or 888-734-9749.  

Things you need to know:

  • You should claim your account and validate your information.  Step by step instructions are provided on the VSS login page
  • You can establish additional users to maintain information, track payments and respond to bids and grants
  •  You can establish notification preferences for grant and procurement commodities
  • New payments and related payment information are available in SIGMA VSS