Thanks for reaching out to us, please check on the page to see if your region now is supported for the model you want to deploy, please be aware that the regions supported by Azure are changing from time to time.
You can always get the information from the page here - https://learn.microsoft.com/en-us/azure/ai-services/openai/concepts/models
I hope this helps.
Regards,
Yutong
-Please kindly accept the answer if you feel helpful to support the community, thanks a lot.