FormSubmission Accounts (error sending 'package' accounts i.e. zip file rather than single html file)

Accounts
1

Hi guys,

We are currently testing sending accounts (we are not actually building the accounts they will be provided to us) via the XML Gateway e.g. see extract of message below

<FormSubmission>
...
 <FormIdentifier>Accounts</FormIdentifier>
 <Document>
  <Data>base64 encoded zip file goes here!</Data>
  <ContentType>application/xml</ContentType>
  <Category>ACCOUNTS</Category>
 </Document>
</FormSubmission>

Where the Data element is the base64 encoded zip file containing the accounts.

For a single HTML ixbrl account file it works fine but for a package account e.g. a CIC accounts it fails with the following error

Error Raised By: Accounts / Number: 9999 / Type: fatal / Location: /

FYI the test zip file we are using was downloaded from the Companies House Free Accounts Data Product Daily Files i.e. Companies House

We downloaded Accounts_Bulk_Data-2025-07-26 and are trying to upload the following zip file

Prod223_4011_15028071_20240731_CIC.zip

Note: the zip file itself verifies ok (as we would expected as it was downloaded from your site) via the XBRL Company Accounts Validator

Is there something extra that has to be specified to support ‘package’ accounts or is it possibly not working at the moment?

Many thanks.

2

The only package accounts (i.e. ZIP files) that can be sent via the XMLGW are UKSEF and Welsh with an English translation. The limit on the XMLGW is 30MB for ZIP files.

CIC packages therefore can only be submitted via the new service, so the accounts need to have been created in third party software (so in this case, Diligent would need to enable that functionality for their users to create the CIC package, and therefore would need to have adopted the 2025 taxonomy suite).

SDN

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