In OpenPlant Modeler CONNECT Edition, requirement is to remove compatibility check for material property upon placing components.
In OpenPlant Modeler CONNECT Edition, placing component arrangement that requires joint items as CAM_AND_GROOVE coupling, throws compatibility check dialog if material for adjoining components are different. See below image.
Below wiki article explains the customization that needs to be done to remove such compatibility check.
If above problem still persists, then please create a Service Request and contact the Bentley Product Advantage group. Please include a list of all relevant details to get in depth analysis for a solution or workaround.