Modification and mass modification guidance

Your Multiple Award Schedule contract may require two types of modifications over its lifetime in order to stay current and compliant.

• We routinely generate mass modifications, often associated with a solicitation refresh.
• You may also modify your own contract through eOffer/eMod.

Mass modifications

We issue mass modifications directly to MAS contractors via the mass modification system. You must sign a mass modification within 90 days of receipt. Each mass modification will outline significant changes impacting the solicitation and your subsequent contract.

If you do not sign a mass modification before the release of the next mass modification, the next mass modification will include those unsigned changes. For example, if you have not signed Refresh 2 by the time Refresh 3 is released, when you sign Refresh 3 it will include changes from both Refresh 2 and 3.

Initiating a modification

Your company’s contracting administrator or POC must submit your modification requests electronically using eOffer/eMod whenever you need to update your MAS contract. Changes that require a modification include:

• Products
• Services
• Prices
• Terms and conditions
• Administrative information such as authorized negotiators, addresses, phone numbers, fax numbers, and key personnel

For information specific to your MAS contract, visit the Vendor Support Center’s page about modification options. 

MAS modification guide

Review MAS modification guidance [PDF - 1003 KB] for information you need to successfully prepare and submit modification requests to your contracting officer or contracting specialist. Check our MAS offerings page by special item number for specific instructions on modifying your contract.

You must keep all authorized negotiators and delegated agents up-to-date in the system. For example, if you delegated pre-award responsibilities to a consultant or third-party agent but do not intend for these agents to represent your firm following contract award, you must specifically request that these agents be removed as authorized negotiators from your contract. Find additional helpful information about processing modifications through the eOffer/eMod help center.

Modification price proposal templates

For non-FCP contracts:

• Modification - price proposal template - services and training [XLSX - 516 KB] (Watch a brief overview video.)
• Modification - price proposal template - products [XLSX - 498 KB] (Watch a brief video overview.)

For FCP contracts: (Unless you are authorized to use the legacy Mod PPT(s) or special price proposal templates):

• Access the most current version of the Product File and Services Plus File here: https://catalog.gsa.gov/help (under Blank Templates)
• If using a specialized PPT, refer to the Required templates for a MAS offer page

COTS letters of supply

You must submit a letter of supply if any of the following are true:

• Your manufacturer does not participate in the Verified Products Portal.
• You deal or resell COTS products.
• You need to add a new manufacturer to your existing contract.

Modification letter templates

Sample cover letters [PDF - 381 KB]. Fill in the information noted in blue text for each sample submitted. You must customize these samples according to your specific needs. Add or delete information depending on your modification type.

Sample cover letter for FAS catalog platform baseline modification request [DOCX - 17 KB]. Use this cover letter template when submitting your baseline modification if you are transitioning to the FAS catalog platform. This document should be uploaded to supporting documentation in eMod.

Sample cover letter for the new EPA method [DOCX - 19 KB]. Use this cover letter template when submitting your request to establish a new EPA method and mechanism based on the incorporation of GSAR 552.238-120 under MAS Refresh 29.

Other templates you may need

• Change-of-Name Agreement template (FAR 42.904)
  • You may also need to submit a legal certification of a name change using this suggested template.
• Novation Agreement template (FAR 42.903)

New FAS Catalog Platform, or FCP

In fiscal year 2024, a majority of contractors with commercial-off-the-shelf products published to GSA Advantage moved to the FCP. We are now focused on moving service catalogs to the FCP.

• Visit the FCP help resources page, which provides a comprehensive list of answers to frequently asked questions, and explains how to sign in to the FCP site.
• Check out our FCP training videos and watch trainings you may have missed.
• Go to the Vendor Support Center to read about Catalog Management and preparing for transition.

Clauses to review

MAS solicitation clauses:

• GSAR 552.238-82 Modifications (Federal Supply Schedule) (Jan 2022) (Alternate I - Mar 2020) and Modifications (Federal Supply Schedule) (Jan 2022) (Alternate II - May 2019)

Clause 52.204-9 (Personal Identity Verification of Contractor Personnel): This clause requires your company to comply with agency personal identity verification procedures identified in the contract that implement Homeland Security Presidential Directive-12 (HSPD-12), Office of Management and Budget guidance M-05-24, and Federal Information Processing Standards Publication, or FIPS PUB, 203.