Greetings!
As we understand that, you are facing an issue with provisioning a MySQL Flexible Server in the "germanywestcentral" region. The error "Provisioning in required region is not supported" generally indicates that the service may not be available in that specific region for your subscription type.
As per the Azure Database for MySQL - Flexible Server documentation, the "germanywestcentral" region does support MySQL Flexible Servers. However, there might be temporary capacity constraints or limitations related to the specific SKU you are trying to deploy. You can check your subscription type and availability here: Azure Program Regions.
Those regions are available as seen on: https://learn.microsoft.com/en-us/azure/mysql/flexible-server/overview#azure-regions
I would recommend you to create a new service and subscription limits (quotas) request to allow access to deploy Azure Database for MySQL Flexible Server in Germany West Central.
Your subscription might not have access to create a server in the selected region if your subscription isn't registered with the MySQL resource provider (RP). Register your subscription with the MySQL RP to resolve it.
To register your subscription in the Azure portal, follow these steps:
- In Azure portal, select More services.
- Go to Subscriptions and select your subscription.
- On the Subscriptions page, in the left hand pane under Settings select Resource providers.
- Enter MySQL in the filter to bring up the MySQL related extensions.
- Select Register, Re-register, or Unregister for the Microsoft.DBforMySQL provider, depending on your desired action.
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Here is the link to parallel thread that may be helpful to you in order to create a support request: https://learn.microsoft.com/en-us/answers/questions/2280001/error-while-trying-to-deploy-azure-database-for-my
I request you to refer the below mentioned link for more information.
I hope, This response will address your query and helped you to overcome on your challenges.
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