Most likely the error messages take place because the AMT portion of the system has not been configured. I recommend referring to the helpful User Guide found here:
Make sure you check the HP site for the latest AMT firmware release for your system.
As a test, try to manually move the system you are trying to provision into an SCCM collection that has auto-provision enabled.
Another thing to try is to run the activator utility on the machines you are trying to provison:
then try to perform a discover on the system.
syntax would be:
activator.exe /s https://fqdn_of_your_sccm_server/ /h /c
let me know if that helped!