Device Configuration Profiles - Domain Join

Hi All,

I have a Device Configuration Profile - setup for Windows 10 and above.

The Computer name prefix is correct.

The Domain name is correct.

and the organisation OU is correct.

A group has been assigned, with just one test device in.

But the profile is showing as not applicable.

Does the enrolment profile need to be set to "Join to Microsoft Entra ID as
Microsoft Entra joined" or Microsoft Entra Hypbrid joined?

Currently set to Microsoft Entra Joined.

Our AD is on prem.

Any idea's?

Thanks