I am trying to create a custom EDIT ALL list button on OrderItem (Order Product) with content source as Visualforce page and am getting below error. I don't want to use standard EDIT ALL button as I want to add some new custom fields to be editable and some fields to be non editable.
Error: List controllers are not supported for OrderItem
Here is my page:
<apex:page standardController="OrderItem" recordSetVar="EditAllProducts"> ... </apex:page>
Any workaround for this ?