<para><function>sd_session_get_seat()</function> may be used to
determine the seat identifier of the seat the session identified
by the specified session identifier belongs to. Note that not all
- sessions are attached to a seat, this call will fail for them. The
- returned string needs to be freed with the libc
+ sessions are attached to a seat, this call will fail (returning
+ <constant>-ENODATA</constant>) for them. The returned string needs
+ to be freed with the libc
<citerefentry project='man-pages'><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>
call after use.</para>