Building an Offer Document in Alliant 3

Modified on Thu, 11 Jul at 11:33 AM

To respond to GSA Alliant 3 solicitations in Symphony, follow these steps: (Note: This guide is not exhaustive. The solicitation should always be considered as the source of truth). 


1. Register for Symphony

Before accessing Symphony, all users should Register with the UEI (Unique Entity Identifier) for the prime offeror at (See Figure 1).


Figure 1. Registration link on the Symphony Sign-In Page

To register for a new account, go to and use the Register Now link. Enter a user email address. (Do not register with a group email account). Those with existing OASIS accounts can use their login information for this site as well.


  • Users must first self-register in Symphony and cannot be added by Administrators. 

  • The use of group email addresses is prohibited.

  • Two-factor authentication via text or an authenticator application is required. (See Multi-Factor Authentication).

  • Symphony does not email authentication codes. 

  • Accounts are inactive until a SAM POC (Point of Contact) registers. (See Administrator Access).

  • Administrators can only manage registered users’ accounts.

  • Companies cannot share assets with other companies across separate registrations. 

2. Start in My Company

Figure 2. The My Company link in Symphony.

Start on the My Company link to add the company's assets and experience (See Figure 2). Starting a proposal with My Company link is foundational for building proposals. 

Symphony calculates an acceptability score for the proposal based on these assets.

3. Check SAM Data

SAM data is retrieved from the System for Award Management site ( when the user first registers for Symphony access (See Understanding the SAM Connection). (See Figure 3). To check SAM data:

  • Request a SAM refresh for the Prime Offer on, if neededbefore submitting a proposal. 
  • The UEI number and CAGE (Commercial and Government Entity) Code are required when a support ticket is submitted

Figure 3. SAM Data in the My Company link 

4. Add Team Members

  1. If the company/the prime offeror is working with other companies on a submission, select the teaming type and add the Team Member* by its UEI (See Figure 4). 

  2. Claim relevant Business Factors, and provide teaming agreements supporting the arrangement in the Team Member’s Documents tab. 

Note: *In Symphony’s terminology, a Team Member is a Joint Venture Member (including Mentor-Protege Joint Ventures (MPJVs), Partner, or Subcontractor participating with a Prime Entity on its proposal submission. It does NOT represent a Symphony user from the same company. Those individuals are known as users.

Figure 4. Adding a Team Member to My Company.


  • SAM data must be correct before Team Members are added to Symphony. We cannot refresh their SAM data.

  • A team member must be added to Symphony prior to being included in a project reference. 

  • The prime offeror and proposed subcontractors must represent NAICS 541512 (North American Industry Classification) code on to qualify for an Alliant 3 RFP in Symphony.

  • Team Members are added to a proposal submission for scoring.

  • Users from the Team Member must register with the Prime Offeror's UEI in order to add their information to Symphony.

5. Add MRCLs (Meaningful Relationship Commitment Letters)

  1. If the company/prime offeror uses information from a company affiliated through the corporate structure (MRCLs), add the company by their UEI.

    • A company is a Team Member if the relationship type does not appear on the MRCL list.

  2. Upload MRCLs to the Documents tab (See Figure 5). 

    • Claim the MRCLs business factors under the Prime Offeror.

Figure 5. The upload area for MRCLs Documents on the My Company tab.

6. Add Projects

When adding new Projects to Symphony: 

  1. Make Alliant 3 the Solicitation Preference when adding new projects (See Figure 6).

  2. Add required information to the Project Details tab in My Company for Alliant 3.

Figure 6. Where to add new projects in My Company for Alliant 3.

Offerors should use Project Documents to support their claims. Offerors must:

  • Add comments to documents before uploading them to Symphony. 

  • Be aware that comments are considered to be tags in Symphony

  • Understand tags listed in the Symphony Tags Legend are recommended but not required (See Figure 7). Only five tags apply to Alliant 3.

Figure 7. Symphony’s Tags Legend with the five Alliant 3 tags highlighted.


  • Project Questions questions marked optional can remain unanswered.

  • If a project received the Negative Past Performance rating, the Negative with Narrative rating can be selected from the dropdown menu and a one-page narrative entered into Symphony to support the claim.

  • Scorecard elements not found on the project details page will be the project’s Performance Factors that are claimed in the proposal submission as they apply. 

7. Add Business Factors 

In the My Company Business Factors tab these business factors belong to the Prime Offeror, and not a Team Member. Claim business factors in the correct section (See Table 1).

  1. When claiming a business factor, provide additional information that may be configured to the Business Factor.

  2. Choose the checkbox to declare intention and save the Business Factor claim. 

Business Factor


Acceptable Party

Acceptable Estimating System


Prime, MRCL, Partner, or JV Members

Adequate Accounting System


Prime, MRCL, Partner, or JV Members

Approved Purchasing System


Prime, MRCL, Partner, or JV Members

Approved Rates (Forward Pricing/Billing Rates)


Prime, MRCL, Partner, or JV Members

Earned Value Management System (EVMS)


Prime, MRCL, Partner, or JV Members

Public Disclosures for Greenhouse Gas (GHG)


Prime, MRCL, Partner, or JV Members

Capability Maturity Model Integration (CMMI)


Prime, MRCL, Partner, or JV Members

ISO 9001:2015 (Quality Management)


Prime, MRCL, Partner, or JV Members

ISO 20000-1:2018 (IT Service Management)


Prime, MRCL, Partner, or JV Members

ISO 27001:2013 (Information Security)


Prime, MRCL, Partner, or JV Members

ISO 27001:2022 (Information Security)


Prime, MRCL, Partner, or JV Members

Cybersecurity and Supply Chain Risk Management (C-SCRM)



Facility Clearance


Prime, MRCL, Partner, or JV Members

Professional Employee Compensation Plan

Human Resources


Uncompensated Overtime Policy

Human Resources


GSA 527

Financial Documents

Prime or All JV Members, and all Subcontractors

Individual Subcontracting Plans


Prime (OTSB)

Emerging Technology Engagement with Small Business

Other Documents

Prime (OTSB)

Organizational Conflict of Interest Form

Other Documents


Representations and Certifications

Other Documents

Prime, all Team Members, and all Subcontractors

Table 1. The Alliant 3 Business Factor Matrix, the section in Symphony, and parties authorized to claim those factors for proposal scoring.


  • All applicable Business Factors can be claimed. 

  • Symphony pulls Business Factors into a proposal and scores it accordingly. 

  • Mandatory Business Factors for a contract award missing from a proposal are displayed as red warning messages.

8. Build the Submission

Go to the Dashboard>Start your Submission> after adding assets and experience in My Company (See Figure 8).

Figure 8. Access to a proposal submission within the Solicitation card


Remember, Symphony is designed to work from the top down. The information compiled in My Company is foundational for building proposals. 

A proposal submission includes the Solicitation name, and the Live Score, at the top of the screen (See Figure 9). To ensure the proposal includes the information required:

  1. Assign the Contract Manager and Program Manager in the Proposal Contacts section

  2. Add Team Members or MRCLs when they’re referenced in a project experience or business factor. 

  3. Include Projects in the proposal. Use the Begin or Modify button to claim Performance Factors specific to the Alliant 3 solicitation (See Figure 9). The Performance factors cover:

    • Primary Relevant Experience Project

    • Emerging Technology Project

    • Cost Reimbursement

    • Foreign Location

    • Organizational Risk Assessment

  4. Provide reference documents Symphony requires from the offeror to support Performance Factor claims. 

  5. Be aware that Symphony collects scoring elements from Project Details. And adding Performance Factors to Projects increases the Live Score.

Figure 9. The Alliant 3 proposal submission includes the Solicitation name and Live Score in the header.

9. Upload the Standard Form (SF33)

  1. Before submission, upload the required Submission Documents (SF-33, SF-30) for the solicitation.

  2. Review the proposal to ensure its completion. (See Figure 10). Verify that Projects and Business Factors for the Prime Offeror or Team Members were claimed correctly, as the solicitation states.

Figure 10. The Review Tab with notification for a missing SF-33  in the Submission Documents section.

10. Submit the Proposal 

Even if Symphony displays compliance messages or other warnings on its Review screen, authorized users can submit a proposal before the submission deadline.

  1. All users can verify the proposal is complete using the Review Tab

  2. Authorized users can certify and submit their proposals (See Administration Basics). (See Figure 11).

Figure 11. Symphony enables authorized users to submit proposals from the Review Tab 

 Need technical help? Contact us  

Users should be aware that the information on this website may not reflect the official positions of the Federal Government. The views and opinions expressed by agents of Apex Logic, Inc. are those of its employees and do not necessarily reflect those of the Federal Government or any of its officials. Guidelines and requirements provided by the Federal Government in the form of solicitations, amendments, modifications, or any other communications supersede any information provided by Apex Logic, Inc. If you have questions about this disclaimer, please contact us.

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