This entity (node:) cannot be referenced.

I had the same Problem my field was filtered by a View...

updated to 3.x did not solve it... but selecting Reference Method..

"Views: Filter by an entity reference view and allow autocreation"

and ticking the box "Create referenced entities if they don't already exist"

Did solve it... I don't know if that only exists in 3.x but it worked...

++ on @smurfxx findings.
i am seeing it on 3.0.0-rc20.
parent node has an entityrefrence .
refrence method is : Filtered by entity refrence view .
and the widgent is `Inline entity form - Complex`.

looking ...

I am running into the same issue, but I could not find the "Views: Filter by an entity reference view and allow autocreation" selection method.

I think this is achieved by core issue ✨ Autocreate for Entity Reference selection handlers that extend ViewsSelection Needs work . Will try that now.

This could actually be a duplicate of 🐛 Referencing new entity fails when reference method is view or entity is unpublished Needs work .