since july update, "/scu mission 1" don't work
link to update note

The categories in the “Comment” option under the “Search” sub-menu have been modified as follows.

Pre-adjustment Post-adjustment
EXP Party ⇒ EXP Party
Mission Battle Content
Quest Missions & Quests
Battlefield Item
Item Linkshell
Synthesis Looking for Friends
Magian Others
Others

i tried :
/scu missions&quests 1
/scu "missions & quests" 1
/scu "missions and quests" 1
/scu "missionsandquests" 1