If I add `config:type` as seen in the table for 4.4.2 Globals on
https://www.suse.com/documentation/sles-12/singlehtml/book_autoyast/book_autoyast.html
and check the syntax,

jing /usr/share/YaST2/schema/autoyast/rng/profile.rng TEST

TEST:76:39: error: found attribute "config:type", but no attributes allowed
here
TEST:82:42: error: found attribute "config:type", but no attributes allowed
here
TEST:84:40: error: found attribute "config:type", but no attributes allowed
here

75: <global>
76:   <activate config:type="boolean">false</activate>
77:   <append>plymouth.enable=0</append>
78:   <boot_boot>true</boot_boot>
79:   <boot_extended>false</boot_extended>
80:   <boot_mbr>false</boot_mbr>
81:   <boot_root>false</boot_root>
82:   <generic_mbr config:type="boolean">false</generic_mbr>
83:   <gfxmode>auto</gfxmode>
84:   <os_prober config:type="boolean">false</os_prober>
85:   <terminal>gfxterm</terminal>
86:   <timeout config:type="integer">4</timeout>
87: </global>