@Asadan That is the entity name in the projection
In my environment, that projection entity is using the lu/entity SupplierInfoGeneral
But it is selecting from the view Supplier_Ent which is based on Supplier lu/entity
Add new custom field to ‘Supplier’. Then in Additional Views make sure to select the view ‘SUPPLIER_ENT’. It will then be able to be added to the page.
I tried to look through the front end stuff to see if I could tell you how to figure it out, but ended up looking at the code and view definition in pl/sql developer to figure it out for you. It was definitely a bit confusing. Maybe the info is somewhere in the API explorer documentation? But looking at the view definition seemed the easiest way.
Thank you for your help and tips @HVeon, I followed your advice and it worked fine 😀