OIC B2B Custom Schema (Tradacoms)

Hi All, I wanted to ask if anyone has had any experience with creating custom B2B schemas?

We have a requirement to send a customer Tradacom invoices. Tradacoms isn't directly supported in OIC B2B, however you can upload custom schema.

I created a Tradacoms schema, uploaded the xsd and did my mapping from a source XML message to the target Tradacoms message. The problem is, the EDI payload remains in XML format. We've used EDIFACT with other customers, and when you've sent a message to the customer, you can download the EDI payload from the B2B observability area and this will be in the EDIFACT format.