Hello everyone,
I'm posting this message to get help with the extensions in LN. I created a Custom Defined Field in my Item and i want to use it in my BOD (ItemMasterBOD).
However i can't add a component to extend in LN (in the screen below i start from an ItemMasterBOD).

I've tried it with the ContactMasterBOD and i could add a component extension :

Is there a particular configuration for using the ItemMasterBOD in the extension ?
In addition i have a second problem :
I can select no field in BillOfMaterialBOD :

If someone can help me to understand better these diffrent notions.