As I cannot see any reference on how to use properly the sysparm_query_category, may I confirm on how did you append the sysparm_query_category in get request?
google-cloud-asset-inventory
spring-boot-actuator
horizontalpodautoscaler
sqltransaction
wavelet
handshaking
osmesa
array-walk
rubyinstaller
entitymanagerfactory
r6
numpy-einsum
virtual-ip-address
lzma
android-asset-delivery
phoenix
ancs
commonsware-cwac
povray
xcode8-beta6
icheck
racf
jsondecodeerror
safari-web-extension
acknowledgepurchase
goblin-graph-library
uibackgroundcolor
pywikibot
njs
nitrogen