Hi David,
This error can be a result of limited capacity in the region. What you can do is create a new Service and subscription limits (quotas) request and ask for access to provision in Switzerland North. To do this, navigate to Cost Management -- Help -- New support request blade:
https://portal.azure.com/#view/Microsoft_Azure_CostManagement/Menu/~/support/openedBy/AzurePortal
Click Next, click Enter details, select Quota type: Region access, select Switzerland North, etc. , Save and continue. Finish filling out details of case, Next, Create. You should receive an email confirmation within a few minutes and then be contacted by support on next business day.
NOTE: It is possible that they will deny your request due to capacity limit or other, but at least you tried.
Please click Accept Answer and upvote if the above was helpful.
Thanks.
-TP