Hello Daniel Tekunoff,
Thanks for posting your question in the Microsoft Q&A forum.
Ensure that your user account has the appropriate permissions, such as the "Contributor" role or a custom role with the necessary permissions, to create and manage App Service plans. You can check your account's permissions by going to the Azure portal, navigating to your subscription, and then checking the "Access control (IAM)" section.
Check your subscription's limits and quotas to ensure that you have not reached the maximum number of App Service plans or other related resources
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