Cannot locate document specification because multi

Question

I have 7 schemas lacking namespace and with the same root node. I know this results in an error when using the standard xml pipeline. So i made 7 receive pipelines that that have the schema as "Document Schema" (as described here wordpress in solution 3). I have done this before and then had it work but this time, it remained giving me the same error.

I tried looking into what could cause the error but haven't found anything yet and google searches come up with the problem of not using a custom receive pipeline.

I "solved" the issue by enabling AllowUnrecognisedMessage on the receivepipeline but i am not finding it a satisfying solution.