Acquisition Support

GSA's professional services portfolio provides a full range of acquisition services. From training to scope reviews, statement of work development to contracting support services, we are committed to helping you find the contract solution you need for your professional services acquisition. Below are some quick references.

Scope Reviews

We offers a scope review capability that analyzes the scope of your task order requirement. This service can help reduce the risk of protest and a benefit of working with GSA.

  • For OASIS Scope Reviews follow these instructions; and
  • For MAS-PS Scope Reviews and support please fill out the following form

Schedules Resources

This reference address who can buy from GSA Schedules, what can be bought from Schedules, and how to buy from Schedules. In addition, these reference guides are excellent resources:

Contract Closeout Quick Reference guide

Use the Contract Closeout Quick Reference Guide [PDF - 173 KB] for contract closeout best practices and recommendations.

FSS Award and Order Checklists

Award and Order Topic Checklist
How to issue an FSS order for Professional Services FSS Order Checklist [PDF - 237 KB]
How to issue an order under an established FSS BPA for Professional Services FSS BPA Order Checklist [PDF - 237 KB]
How to establish a multiple-award FSS BPA for Professional Services FSS Multiple Award BPA Establishment Checklist [PDF - 238 KB]
How to establish a single- award FSS BPA for Professional Services FSS Single Award BPA Establishment Checklist [PDF - 246 KB]

MAS- PS Old SIN to New SIN/ NAICS Code Crosswalk Table

Download the Official MAS- PS Old SIN to New SIN/NAICS Code Crosswalk Table [XLSX - 93 KB] where you will find the new SINs associated with MAS- PS Catalog H (00CORP) for making your offer.

The above Crosswalk Table has been excerpted from the Available Offerings and Requirements webpage. Select the Available Offerings Attachment [XLSX - 701 KB] to view the "Legacy Schedule SIN to Consolidated" tab.

Get Contract Support

Our team can also help with:

  • Requirement Analysis;
  • Market Research;
  • Acquisition Planning and Strategy Execution; and
  • Project Management / COR Support.

Email us at

MAS- PS Ordering Guides & Other Guidance

Access these ordering guides and guidance to help with your acquisition.

SIN NAICS Document Name SIN Name
520 7 541211

Ordering Guide for Contract Audit Related Services under the Professional Services Schedule [PDF - 910 KB]

Financial & Performance Audits
541 4D 561920

Guidance when using Other Direct Costs in support of Conference Events or Trade Show [PDF - 242 KB]

Conferences, Events, and Trade

Show Planning Services

874 6 541611 Acquisition Support Services Ordering Guide Acquisition Management Support
874 6 541611 Notice regarding prohibition of inherently governmental services Acquisition Management Support
874 6 541611 Importance of Training for Acquisition Personnel Acquisition Management Support
874 6 541611 Sample non-disclosure Statement Acquisition Management Support
874 6 541611 Same Request for Quote Template Acquisition Management Support
874 8 611430 Acquisition Workforce Training Ordering Guide

DAU and FAI Certified DAWIA and FAC Acquisition Workforce Training

871 2




Space Launch Services Integrated Services [PDF - 475 KB]

Implementation Guide [PDF - 475 KB]

Concept Development
871 7



Implementation Guide

Construction Management and Engineering Consulting

Services Related to Real Property

OASIS Ordering Guide

The OASIS Unrestricted, OASIS SB and OASIS 8(a) Master Contract will help your agency acquire professional services for integrated solutions more efficiently and economically.

OASIS Unrestricted, SB, and 8(a) Ordering Guide [PDF - 922 KB]

Last Reviewed: 2022-06-06