[Issue] Azure Free Subscription: The template deployment is not valid according to the validation procedure

[hemarina]

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Describe the bug With Azure Free Subscription, one Azure location can only have one project/deployment. Test on windows desktop with 0.1.0-beta.4. This error occurs only if users choose East US 2 as Azure location and there's already one deployment in East US 2.

Deployment Error Details:
MaxNumberOfEnvironmentsInSubExceeded: The subscription 'ef289fdc-500c-4099-82d0-d9e50d19d7a7' cannot have more than 1 environments in East US 2.

This error occurs on each template if the Azure location is used for another deployment. If I didn't see MaxNumberOfEnvironmentsInSubExceeded error message. I wouldn't quickly define the reason of this InvalidTemplateDeployment error.

Deployment Error Details:
InvalidTemplateDeployment: The template deployment 'hemarina-test28' is not valid according to the validation procedure. The tracking id is 'e181f830-4eff-47ed-b69b-86f6544fda69'. See inner errors for details.

To Reproduce Run azd up on same Azure location with more than one deployment of templates.

Expected behavior This seems like a restriction with Azure Free Subscription and users might not be able to fix it when seeing deployment not valid. We should at least document it in F&Q