Hi @Somsubhra Mukherjee
Thanks for the question and using MS Q&A platform.
Thank you for your query. After checking with the internal team, I found that the Generate Data (Preview) feature was part of a preview functionality that has been replaced by the Data Explorer (preview) feature.
You can find more details on this update here: Announcing the Event Hubs Data Explorer. This new feature provides a comparable set of tools to generate and explore data.
Additionally, the official documentation will be updated soon to reflect this change.
Hope this helps. Do let us know if you any further queries.
If this answers your query, do click Accept Answer
and Yes
for was this answer helpful. And, if you have any further query do let us know.