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Hi Eduardo Maia
To resolve your issue, please follow the below MS document:
Exceeded quota:
Request quota/region access: In the Azure portal, navigate to Help + Support → New Support Request → Quota → Request region access. You can ask Microsoft to enable Brazil South for your subscription.
Subscription access:
Your subscription might not have access to create a server in the selected region if your subscription hasn't been registered with the SQL resource provider (RP).
https://learn.microsoft.com/en-us/azure/azure-sql/capacity-errors-troubleshoot?view=azuresql&tabs=portal
Please let me know if you face any challenge here, I can help you to resolve this issue further
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