I know there are lots of other questions (and some answers) in the forum for this question.
I have a Dataflow (Fabric capacity workspace) with multiple queries, most of which are created using the same function to append matching tables from two other Dataflows, with some further combination (merging) where needed.
I have one query that is not refreshing on the service, with the error that it is referring to another entity. As far as I can see, there is no real difference between the query marked with the red cross compared to that with the green tick, but the latter works while the former fails.
The green-dot queries have Enable Load turned on, whilst the amber-dot (...Prep) is turned off (I have also tried with it turned on).
I have tried following the success of @BugmanJ in