this the configuration for home sitemenus, similar for news
/hst:hst/hst:configurations/bloomreach/hst:workspace/hst:sitemenus/main/home:
jcr:primaryType: hst:sitemenuitem
hst:referencesitemapitem: root
hst:repobased: false
Thank in advance
generally speaking, as long as your items appear in the desired order, this is a harmless warning.
The best way to fix this is to modify the yaml files manually, adjust the order-before property according to the desired order, and resolve the multiple references.