niether does mkaw, doesn't prevent you from making one. it simply (likely) wont be included in the official espeak release, but you can make a patch for sambahsa users. I use mka for mkaw, It seems sam is unassigned so you can use it for sambhasa :-).

On Fri, Jul 4, 2014 at 2:27 AM, Olivier Simon <[log in to unmask]> wrote:
Thanks Logan !

But Sambahsa has no ISO code.