Hi,
The documentation states that a charge before 06/04/2013 won’t have a charge code so the ExistingChargeKey is needed to perform updates on the XML filing API.
Is there any field on the public API that displays the ExistingChargeKey and if so what field is it below?
https://developer-specs.company-information.service.gov.uk/companies-house-public-data-api/resources/chargelist?v=latest
Any help is appreciated.