When your submissions get past schema validation, CH then apply a second layer of validation which we have published, we hope you find this useful.
The Company Data Request is also submitted through the CH XML Gateway, but I don’t see it listed at http://xmlalpha.companieshouse.gov.uk/validation_html/index.html.
In the event that my Company Data Request submission contains an unrecognised Company Number or Company Authentication Code, what second layer of validation is applied to the Company Data Request submission?