Andrew Hemingway, Firstly, apologies for the delayed response.
I understand you have tried multiple things to isolate the issue. In which region are you attempting to provision? Kindly check this
Kindly ensure all the prerequisites/supported guidelines are met -
https://learn.microsoft.com/azure/ai-services/openai/concepts/use-your-data?tabs=ai-search
Also, just providing some pointers on drilling-down the issue:
- Azure Service Health provides you with a customizable dashboard which tracks the health of your Azure services in the regions where you use them.
- Azure Resource Health helps you diagnose and get support for service problems that affect your Azure resources. It reports on the current and past health of your resources.
Kindly let us know, I'll follow-up with you further.