I am hit with other issue 'Ensure that page performance is improved by only rerendering the table and error messages when a use clicks the Add button.' I have used actionRegion to rerender the needed table,chart and messages.still it shows issues.

Hi All,

While working on the Advanced Apex Specialist Superbadge Step 7 I am facing a weird issue.


The OrderExtension class is alreeady containing a variable of StandardSetController and in the OrderEdit page orderItemList is getting iterated.
But Salesforce doesn't support standardsetcontroller for OrderItem.

Hence getting the error: List controllers are not supported for OrderItem

Could anyone please help me, how to solve this issue.

Thanks,