Hi Smiroo,
I understand that you are trying to delete the SSID profile from Groups>Instant Config page but it is throwing below error message
Cannot delete SSID which is currently being referenced in the Network Assignments section
Based on the error message it looks like you have mapped the SSID profile in network assignment section. We need to uncheck before proceeding for deleting the profile.
Navigate to Groups>Instant config> Networks section, down the page you will see below hyper link option, click on this it will take you to Network Assingment Section.
Assign wired profiles to interfaces
from drop down list uncheck the profile which you are trying to delete and try deleting again.
Regards,
Pavan
If my post address your queries, give kudos :)