In the last few weeks, some Colleagues asked me, why they cannot use the new suggested measure feature. They said to me, that they followed every step inside the Power BI blog post
https://learn.microsoft.com/en-us/power-bi/transform-model/quick-measure-suggestions

The reason is simple, the Power BI tenant is not running inside the USA or a supported region. This preview feature is using Chat GPT and analyze your data and model. Mostly, depending on the GDPR or other policies it is not allowed to move your data outside of your region.

An example: This tenant is running inside Europe – the feature is not available for this region.

This tenant is running inside the USA – here you can use CHAT GPT