Commbuys Vendor Registration Job Aid

Massachusetts Office Of State Procurement

Buyer provides detailed guidance on how to register as a vendor in the COMMBUYS system and respond to bid solicitations. The job aid walks users through the complete registration process including setting up administrator accounts, applying for the Small Business Purchasing Program, and selecting appropriate business categories. It also includes comprehensive instructions for creating and submitting quotes in response to bid opportunities.

• 6/23/2025 - Proposal Due Date

• Must have a Tax ID (EIN or SSN)
• Must designate a Seller Administrator
• Must select at least one UNSPSC commodity code

• Complete online vendor registration in COMMBUYS system
• Set up Seller Administrator account to manage company information
• Select appropriate business categories and UNSPSC commodity codes
• Apply for Small Business Purchasing Program if eligible
• Create a quote response to bid solicitations
• Upload required response documents and attachments
• Respond to items tab with pricing or attachment indicators
• Answer required buyer questions before submission
• Accept terms and conditions of bid solicitations
• Submit completed quotes before bid opening deadline
• Register for BidSync bid notification service
• Manage multiple addresses for bid communications
• Mark confidential information appropriately in submissions
• Configure password requirements for secure access
• Acknowledge bid receipt to receive future correspondence
• Download and review all RFR attachments and forms
• Export and upload items for large quote responses
• Withdraw, reopen, and resubmit quotes when necessary
• Navigate between different COMMBUYS system tabs
• Search for bid opportunities using advanced search functionality