Adding to the above information provided by @Abiola Akinbade
Create a new user and try to activate P2 trial version License.
Please follow the below steps
1.Sign into the Microsoft Entra ID and create a new user.
2.Assign global Administrator role to the user and reset that user password.
3.Activate the free Entra ID P2 trial Microsoft Entra ID P2 Trial
4.Use UPN (from step2) for the email address
It will state that this username is being used by another MS Service and gives you the opportunity to login with that user. Login using the password you set earlier.
You should then be redirected to a page that shows you the Entra ID P2 trial with a “Try now” button. After activating the trial, you should - might - get a few error/configuration messages stating that the Sold-to address, Registration number needs amending first.
5.In the MS365 Admin Center (which you are redirected too) - check that the Billing accounts default directory correlates to the email address you used to create the Azure Free Account. (You should have the same created users as you do in the Free Azure account).
6.Amend the Sold-to address details, check the Registration number from the Billing Accounts section and then add a valid payment method.
7.Log out, close your browsers, and clear your cache. Then log back in to the Microsoft Entra/Azure portal using your Free Azure Account email and start the Entra ID P2 trial process again.
8.Follow step 4 (you should now be able to start the Entra ID P2 trial without any issues or notifications).
After completing all required steps, you will get P2 Trial version License.
and if needed to assign a license to you. navigate to Licenses > All Products and assign the Microsoft Entra ID P2 license to your main Azure Account.
Hope this helps. Do let us know if you any further queries.
Thanks,
Navya.
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