The AI ​​thinks that this function is not available when I put it to generate

Do you have internet connection? Generative AI needs internet connection
If you have.

Try this:

Sign out and sign back in to both the Creative Cloud Desktop app and the Photoshop (beta) app

Log into Behance with your Adobe ID and enter your Date of Birth.

Once your Date of Birth is up to date, relaunch the Photoshop (beta) app to enable Generative Fill.

https://helpx.adobe.com/photoshop/using/generative-fill.html

Hi Karim.   Could you clarify what Ai function is not available?  i.e. Generative Fill, Generative Expand, Neural Filters, etc.

Also how you are trying to use it — decribe your workflow?

What version of Photoshop, and what Operating System and version?