1 - Users can Build/upgrade their profile by following the steps at Manage Broadcom Site IDs or upgrade your account
2 - After Building the profile/Adding site id to the profile, Please allow the data to synchronize before the system allows you to create the technical case.
If the issue persists even after 6 hours, create a Non-technical case with the Broadcom Customer care team using the web form.
Contact Partner Support:
For customers who obtain support through a Certified Broadcom Support Partner, click here to locate your Partner Support contact information.