If you’ve been tracking the GSA Multiple Award Schedule (MAS), you know it never stays the same for too long. Over the last few refreshes, GSA has been refining the program by retiring some SINs, consolidating others, and reshaping categories to better reflect today’s buying environment.
I often get questions like:
“Why did my SIN disappear?”
“Do I need to panic if my SIN is retired?”
“Where do I go from here?”
The truth is, retired SINs are not the end of the road. They are usually absorbed under broader, more streamlined categories. What it really signals is a shift in how GSA wants to structure offerings and where the government’s buying priorities are headed.
Between Refresh 26 and Refresh 28, here are the SINs that were retired across categories 
Furniture & Furnishings
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33721R – Remanufactured Furniture
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33721RSB – Remanufactured Furniture (Small Business)
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321918PF – Portable Flooring Solutions
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713940PACK – Fitness Solutions
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337127CSB – Chair, Convalescent (Small Business Set-Aside)
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332439MLB – Mail Lock Boxes
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339113P – Packaged Healthcare Furniture
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337127P – International Packaged Furniture
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339930 – Doll, Toy, and Game Manufacturing
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532289 – Furniture Rental and Leasing
Office Management & Supplies
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339940OVER – OS4 Overseas Copiers
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334290OS – Overseas (International) Audio/Visual Products
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333318SBSA – Office Security Equipment (SBSA)
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561499N – Network Connectivity Support Services
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333316OS – Overseas Copiers and Supplies
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5191M – Entertainment, News, and Library Media
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333316CPC – Cost-per-Copy Plan for Copiers
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511130 – Books and Pamphlets
Industrial Products & Services
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333414 – Water Heaters
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532412 – Leased Equipment and Accessories
Miscellaneous
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335210 – Personal Care Items
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339992 – Sounds of Music
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339999ASB – Awards (SBSA)
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339999A – Awards
Professional Services
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524292INS – Third Party Administration of Insurance and Pension Funds
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541922 – Commercial Photography Services
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541850 – Exhibit Design and Advertising Services
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323111SBSA – Photographic Services and Solutions (SBSA)
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541713 – Engineering R&D in Nanotechnology
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541714 – Engineering R&D in Biotechnology
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541720 – Research, Analysis, and Developmental Services in Social Sciences and Humanities
Scientific Management & Solutions
- 541990TAD – Technical/Application Development and Support (TADS)
Transportation & Logistics Services
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326211 – Tires – New
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3363P – Spare Components and Vehicle Accessories
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561910 – Packaging Services
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811122 – Automotive Windshield and Paint Repair
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81111 – Automotive Maintenance, Repair, and Body Services
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336211V – Vocational Bodies and Attachments
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336350 – Remanufactured Automotive Components
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3363 – Upfitting of Government-owned Emergency Vehicles
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326212 – Tires – Retreaded
Facilities
- 339113G – Gloves
What this means for contractors:
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Do not panic if your SIN was retired. In most cases, there is a migration path to an active SIN.
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Use this as an opportunity to re-evaluate your scope since a SIN retirement often encourages contractors to expand or pivot their offerings.
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Keep an eye on consolidations. Fewer SINs does not mean fewer opportunities, it usually means broader and more flexible categories.
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Staying aware of these changes helps you avoid compliance issues and keep your catalog aligned.
At the end of the day, the MAS program is evolving to reduce complexity for both buyers and sellers. Contractors who stay proactive, track these changes, and adapt early are the ones who remain ahead.