Trying to create a fine-tuning job from azure OpenAI base model I am getting: InvalidRequestError The specified base model does not support fine-tuning

We are trying to create a fine-tuning job from azure OpenAI base models like ada, davinci, curie. It is a fine-tuning for classification (using our own training data, already prepared to be used for fine tuning). I am getting the error " InvalidRequestError The specified base model does not support fine-tuning".

We have a company's subscription, and our Resource (Azure openAI service) is created in East US region.

If I tried to use Azure OpenAI Studio for creating a custom model the list of model is empty and the following message appears "Fine tuning is currently unavailable in this region due to capacity constraints. Please use a resource in a region which supports fine-tune of the Azure OpenAI model.".

Also called GET https://aoairesource.openai.azure.com/openai/models?api-version=2022-12-01. (with my company's correct subscription data ) and no models has fine-tuning enabled, It is false in all the models.

Should we request fine tuning to be enabled in our subscription as this Q&A post suggested ?

If that's the case how can I do that?

Please help us solve this. Thanks!