Hi,
Since 11:55am today (19/08/26) we are consistently unable to complete registered email address filings: closing the transaction returns HTTP 500 with an empty response body.
The filing sequence we use, and what we observe:
POST https://api.company-information.service.gov.uk/transactionsbody:{"company_number":"<NUMBER>","description":"Transaction for <NUMBER>"}→ 201 Created, transaction id returnedPOST https://api.company-information.service.gov.uk/transactions/{transaction_id}/registered-email-addressbody:{"registered_email_address":"<EMAIL>","accept_appropriate_email_address_statement":true}→ 201 CreatedPUT https://api.company-information.service.gov.uk/transactions/{transaction_id}body:{"status":"closed"},Content-Type: application/json→ 500 Internal Server Error, response body empty
The access token is a valid user-authorised OAuth2 token with the https://api.company-information.service.gov.uk/company/{company_number}/registered-email-address.update scope (we refresh successfully immediately before the filing, and steps 1 and 2 are accepted with the same token).
We see the same behaviour in the sandbox environment (https://api-sandbox.company-information.service.gov.uk) with a sandbox test company, so it does not appear to be data-specific.
Is anyone else seeing this?
Many thanks
Peter