How to disable supplier registration error notifications?

Summary

How to disable supplier registration error notifications?

Content

Hello,

When there is an issue during supplier registration, several users within Procurement unrelated to that process receive a notification email.

Find attached a snapshot. For supplier SUBTEL GMBH (the one in the snapshot), the issue was that the category selected during the internal registration was not included in the FYI workflow. However, we do not have detected all kind of errors that originate this notification.

This nofitication should ONLY be sent to the user that requested the registration (in the example "bpo@unav.es"), and not all admin users.

Is there any setup that could be done in the following BPM tasks?