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STC lodgement, REC Registry and paperwork

What happens if my STCs fail validation or the application is rejected?

Short answer

A failed claim means the Clean Energy Regulator did not register the certificates. They cannot be traded, the failure reason is shown in the registry, and you either fix the issue and recreate the claim or, if it cannot be fixed, accept the loss.

Written and checked by the Energy Merchants desk · Reviewed 3 October 2026 · For installers

When a claim fails validation, or an application is rejected, nothing has been registered. The Clean Energy Regulator (CER) has decided the evidence or eligibility did not support the certificates. The point of this page is what to do next.

What a failure means

  • The STCs do not enter your registry account as registered certificates and cannot be sold.
  • The reason is recorded against the claim, usually a category such as photos, documents, installer details or eligibility.
  • A fee-free trader does not take a fee from you for it, but its agreement may say whether advance payment is repayable.

The registry status is explained in REC Registry status meanings.

The first 48 hours

  1. Read the reason. Do not guess. Copy it into the job file.
  2. Sort fixable from unfixable. Missing or poor photos, a typo in an address or a serial, and an incomplete form are usually fixable. A non-eligible product or an install that was not attended by an accredited person usually is not.
  3. Contact your trader. They may already have the CER’s notice and can advise.
  4. Collect the evidence. Pull original photos, the assignment form, the invoice and the retailer written statement.
  5. Decide: recreate or stop. See how to resubmit failed STCs.

Common reasons

The causes are the same ones traders see every week: photos, serial numbers, address and installer data. The list is in why STCs fail on photos, serials and address and the top claim rejection reasons. For a longer explanation see why a claim was rejected.

Who bears the cost

If the failure came from a paperwork error and you are fixing it, the cost is time. If you were paid in advance and the claim cannot be fixed, the contract may require repayment. See STC clawback and who is responsible.

From the desk: Do not recreate a claim in a hurry. A second failure on the same system looks worse than a delay, and the registry asks you to explain the first.

What this means for installers

Treat a fail as feedback on your process. If the same reason recurs, change the checklist. A trader that pre-checks claims should drive your failure rate down. See how Energy Merchants checks claims and the pillar on STC trading. The fix a failed STC claim page has a longer repair guide.

Talking to the customer

If the customer has paid a reduced price on the basis of the STC discount, a failed claim may leave you out of pocket, but it does not change what they owe. Do not ask the customer to pay the difference unless your contract allows it. Explain plainly that there is a paperwork issue, you are fixing it, and the installation is unaffected.

Follow-up questions

People also ask

Do I get paid if the STCs fail?
Not for certificates that fail. If you were paid in advance, your trade agreement decides whether you repay or replace.
Where do I see why a claim failed?
In the REC Registry, against the certificate record, and in any notice from your trader or the Clean Energy Regulator.

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