The Cloudblue Connect Zapier App is a valuable way to implement workflows between Cloudblue Connect and a lot of platforms. Also Zapier have a connector that allows to integrate workflows with a API Rest System.
This workflow has two parts, the first load the request from the Vendor Portal and using a POST operation over the API of the Vendor Platform. After a period of time (calculated by Zapier Time) checks if the request is in status = ready, it is true, perform the accept request operation to Vendor Portal.