You submitted your SAM.gov registration. Then it stalled on a step called entity validation, with no clear explanation of what went wrong. That is one of the most common places a first-time registration gets stuck, and it is rarely a SAM.gov problem. It is a data mismatch.
What entity validation actually checks
Entity validation compares three things you enter against outside records: your legal business name, your physical address, and your Taxpayer Identification Number (TIN/EIN). SAM.gov runs this comparison against the IRS and other authoritative sources, including your state's incorporation records, before it will issue a Unique Entity ID or activate your registration (SAM.gov, Entity Registration).
If everything matches exactly, the system clears you automatically. If it does not, your registration moves into manual review.
Why it fails
The name on your SAM.gov entry has to match your IRS EIN letter and your state formation documents letter for letter. "My Company LLC" and "My Company, L.L.C." are not the same string to an automated match. Neither are a dropped suite number, an abbreviated street type, or a DBA entered where your legal name belongs.
The most common triggers:
- Legal business name doesn't match the IRS EIN confirmation letter exactly
- Physical address format doesn't match what's on file with your state or the IRS (a suite number added or dropped, a P.O. Box, an abbreviated street type)
- TIN doesn't match the name or name control the IRS has on record for that number
- Recent name change, address change, or entity restructuring that the authoritative sources haven't caught up to yet
None of these mean your business is invalid. They mean two records disagree, and SAM.gov won't guess which one is right.
How to fix it
If validation fails, SAM.gov gives you a "Create Incident" option inside your workspace. That opens a support ticket, not a new registration. Attach documentation showing your legal business name and physical address in the same document, current and no older than five years. A state-issued formation document or your IRS EIN letter usually works. If the mismatch is on the TIN side specifically, you'll need to confirm with the IRS directly that what you've entered in SAM.gov matches their records exactly before resubmitting.
Do not start a new registration to get around a stuck one. That creates a duplicate entity, which is its own problem to unwind later.
Once you submit documentation, a reviewer either matches you or requests something more specific. Respond promptly. If a reviewer needs clarification and doesn't hear back, the ticket can close on its own, and you're back where you started.
What this means for your timeline
A clean submission, where everything already matches, generally clears in the standard registration window. Once it lands in manual review, add real time back into your plan. It is a queue behind a person, not an automated pass, and how long it takes depends on what documentation is missing and how fast you respond to follow-up requests. If you're bidding against a deadline, don't assume entity validation will clear before it does.
The upside: this is entirely within your control. The mismatch that put you in manual review is a data problem you can find and fix yourself, not a defect in the system.
If you want a structured way to check your registration data against itself before you submit, our free readiness check walks through the same fields SAM.gov validates and flags what doesn't line up.
Entity validation and your CAGE code are handled by the same underlying record, which is why a stuck CAGE assignment is often really an entity-validation problem wearing a different name. And the UEI number that gets checked here is worth understanding on its own terms too: the difference between a UEI and a CAGE code trips up a lot of first-time registrants.
We are not SAM.gov, are not affiliated with the U.S. government, and are not a registrar. SAM.gov registration is always free at sam.gov. We provide preparation assistance only.