Configuring net weaver business client (NWBC) for the first time

hi

i am new to net weaver business client

i used this tutorial for configuring nwbc

Nwbc how to_get_it_installed_and_runningn

now when i am gonna to test this i came up with error : HTTP 500 internal error

at first i thought this could be due to FQDN error, since i am not in any domain and i use workgroup i followed instruction to set my configuration like this

i put icm/host_full_name in the instance profile as well

my computer name is : saptest (which you can see in the sapglobalhost parameter)

and my full name is : SAPTEST.ent.localhost.com (i put ent.localhost.com in DNS primary prefix)

i have a loopback network adaptor which is set to ip:10.10.0.10,255.255.255.0 and i put these lines in the HOST file in windows directory

172.30.10.41 SAPTEST.ent.localhost.com SAPTEST

but the problem is still there

here is also another error in ST22 transaction

PS1 : web GUI is working fine so i guess ICM is okey

PS2 : i did not activate /kyk/gen_aio_simplification in sfw5 transaction

any suggestion to help this would be appreciated

thank you