Hi,
I don't think above setting is required as the standard text says "If you do not define an RFC destination, the system reads the standard RFC destinations from transaction BD97".
Can you check the external system maintained in "Warehouse Dependent Activation of Inspection object types".
Also you can check the settings for external QM system at below path:
Connect the EWM system to the QIE.
In Customizing, choose Cross-Application Components→Quality Inspection Engine→Central Settings→Communication with an External QM System→Define External QM Systems.
Thanks,
Sandip