• Oleg Pogrebnyak
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Accidentally I have deleted Custom Metadata Types record and then also from managed package. Now I can't create record with same DeveloperName (with same Label - can). But there is no record with this DeveloperName in metadata/recycle bin/package.

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Hi All,

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