2021 Longitudinal Systems Analysis Report Schedule

2021 Longitudinal Systems Analysis Report Schedule

This information was originally distributed via HUD.gov. HUD Exchange is redistributing the information for awareness.

This announcement contains important information about the upcoming 2021 Longitudinal Systems Analysis (LSA) data submission process. The Homelessness Data Exchange (HDX) 2.0 will open for LSA uploads on Monday, December 6, 2021. Thank you for your patience as timelines have changed. These changes are a result of changes in HUD’s internal process and not the team of technical assistance providers supporting vendors or communities as they submit their LSA files.

The 2021 LSA data submission process will begin with a Preliminary Upload Phase. During this time, communities are encouraged to make at least one upload attempt. Communities will be able to view errors for their upload in the HDX 2.0 during the Preliminary Upload Phase; however, communities are not expected to begin data cleaning at this time.

The Preliminary Upload Phase will enable communities to:

  • Acclimate to the updated HDX 2.0 interface
  • Ensure the proper staff have permissions in the HDX 2.0
  • Allow for communities to receive support from their vendors or LSA support staff via the AAQ in the event there are errors preventing uploads

Anticipated 2021 LSA Submission Cycle Schedule


Data Submission Process Step Details Dates
Preliminary Upload Phase All CoCs should aim to have uploaded at least one Official HUD Review File into HDX 2.0. December 6, 2021 – December 20, 2021
Outreach to CoCs Outreach to CoCs from assigned LSA Data Liaisons begins. December 13, 2021 – February 15, 2022
Winter Holiday Break During this time, warnings will not be run on data quality files. CoCs may still upload and review any existing errors. December 23, 2021 – January 2, 2022
Outreach to CoCs Resumes Outreach to CoCs from LSA Data Liaisons and the production of warnings will resume. January 3, 2022
Final Deadline to Resolve Data Quality Flags Final deadline to resolve data quality flags with your assigned Data Liaison and mark
your data complete; CoC should confirm data within 3 business days of completion.
February 15, 2022

New Resources

New resources, prepared by technical assistance providers, have been released to support Continuums of Care (CoCs) in this process including:

As a reminder, all community resources and guidance related to the LSA are announced through the HUD Exchange mailing list and are available on the LSA Tools and Guidance page.

HDX 2.0 Login Information

To access the HDX 2.0, you will first need to set up an account in the system.

You may need to update your password. From the login page, click on the link that reads “Forgot Your Password?” in blue text below the login text fields. If you have any questions related to logging into the HDX 2.0, please submit an AAQ through the HUD Exchange Ask A Question (AAQ) portal.

SNAPS Mailing List Subscription

Stay up to date on HUD’s Special Needs Assistance Programs (SNAPS) news and updates for grantees and interested stakeholders:

Learn more about SNAPS mailing lists.