When the vendor submits an application via the vendor portal, and it is rejected for a specific reason, the customer's data (e.g. e-mail address) remains stored in the system. once the vendor has made improvements (e.g. requested certification), it cannot re-register in the system, as this data is still stored in the prospective vendor request.

I propose to allow the vendor to modify his application by reopening the form, if the change requested option is selected in the vendor request workflow, and to allow him to post his application again once the modifications have been made.