When try to add "DisallowUsernameInURL= 0x1; REG_DWORD" to sm.registry, it doesn't take effect.
There are non-printable chars in the file,
for space, it should be hex 20, C2A0 is UTF-8 nonbreaking space character, but it cannot be recognized by siteminder.
The following cat command can also show the non-printable command,
cat -vet sm.registry
Edit the file directly on linux command console with vi editer, remove the white spaces, and manually input the space or tab