XBIVE-13942: Adds allowBackorders field to POST /Invoices

Author: Jonathan Hatlee

xero_accounting.yaml

@@ -7918,6 +7918,7 @@ paths:
         - $ref: "#/components/parameters/summarizeErrors"
         - $ref: "#/components/parameters/unitdp"
         - $ref: "#/components/parameters/idempotencyKey"
+        - $ref: "#/components/parameters/allowBackorders"
       responses:
         "200":
           description: Success - return response of type Invoices array with newly created Invoice