Follow these steps to connect Salesforce Marketing Cloud via the StackOne Hub successfully.
Installed Package | Administer
permission. This permission is automatically applied to the Administrator and Marketing Cloud Administrator system-defined roles. Add the permission for a different role or user in the Administration area.Open Setup
Navigate to Installed Packages
Create new Package
new
button placed on top-right corner on the installed packages page.Fill the details
save
button.Add Component
Add Component
button.Choose your component type
API Integration
and click on next
button.Choose your integration type
Server to Server
and click on next
button.Set Server-to-Server Properties
Get the credentials
Enter your API credentials
Connect
button.