ChargeUpdate ExistingChargeKey

When sending a ChargeUpdate message for a charge without a ChargeCode what value should go in the ExistingChargeKey?

I suspect it should be the last part of the links.self URL returned by the JSON API calls for charges but wanted to confirm.

If so, am I right in thinking testing submissions using that key won’t work on the XML test gateway as the relevant charge data won’t be loaded there?

Hello Dave,

This forum is solely related to our XML related filing and search services.

Can I please ask you to advise your API related query on the forum set up for this purpose - link as follows:

Thank you.