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Companies House error and rejection codes

When Companies House turns a submission down, Fyling shows you the reason Companies House gave, word for word. This page explains the common codes.

Codes

CodeWhat it meansWhat to try
502Companies House did not accept your presenter ID or authentication value.Check both on your presenter credentials page. Use test credentials in test mode and live credentials in live mode.
503The request was sent twice, or out of order.Try again in a moment. If it keeps happening, contact support.
504Too many requests were sent too quickly.Wait a minute and try again.
604The submission was missing a field or contained invalid data.Go back through the steps, check every answer, and submit again.
609A confirmation statement cannot be filed online for this company because it has too many shareholders.File this one with Companies House another way.
702Companies House was temporarily busy.Try again later.
800A fault at Companies House.Try again later.
900Companies House could not act because of a temporary system fault.Try again later.
5003Companies House does not know the presenter account.Check your presenter ID with Companies House.
5006There are insufficient funds on the presenter account.Top up the account with Companies House, then submit again.
5007The presenter account is suspended.Contact Companies House.
9001The company number is not on the live Companies House register.Check the company number.
9101The company number is not in a valid format.Check the company number.
9021Companies House reported an undefined error.Contact Companies House with your presenter ID and the submission number.

If your code is not here

Companies House sends its own wording with every rejection, and it is the most reliable guide. This list is not complete. Once you have fixed the problem you can resubmit.