{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "https://api-evangelist.github.io/dassault/json-schema/billto_po_reference.json", "title": "Billto Po Reference", "type": "string", "description": "Identifier of the order as recorded in the **Bill To** site's ordering system.\n\nIf available, this reference will also appear on the Dassault Syst\u00e8mes invoice.\n", "example": "EXAMPLE-CORP-20250518" }