How do I fetch the product display nodes referencing the given product using "Fetch entity by property"? Let me start off by saying that I am ultimately trying to get the product display from a line item. I would use commerce_rules_extra, which has a feature that is supposed to do this, but I could not get it to work. So I am trying to get the product display node for the product.

My strategy is to create a simple Rules Component that returns all product display nodes that reference a given product. 

My component accepts a parameter of type: Commerce Product

My component has a Condition: Data comparison: Product:type - equals - "Product"

My component has an Action: 


Fetch entity by property, Entity type: Node, Property: Product (I believe this is the product reference field)


When I attempt to set the Value as the component's Parameter "Product", the action will not accept this—instead it gives this error:


  The data type of the configured argument does not match the parameter's value requirement.


This would be the typical method for fetching nodes by property on an entityreference field but I can't do the same with this productreference field. Any hints would be greatly appreciated.
Have a look at Action "Fetch entity by property" does not allow to fetch by multi-valued properties, which appears to be similar to what your question is about (and has RTBC status).

If I'm right, try the patch attached to it.