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Mike SummittMike Summitt 

Add rollup summary to Zuora subscription object

I need to add a rollup summary to the Zuora subscription object.  When I attempt to create it, the option is disabled, with a hover message saying that it can't be used because this object isn't the master in a master-detail relationship.

I know that this message is incorrect because 1) there are no master-detail fields in the subscription object, and 2) I've successfully created a rollup summary in the account object using the opportunity object, and there is no master-detail relationship between them, or any master-detail field in opportunity.

I can't add a master-detail relationship because not all the records in the table being rolled up are related to subscriptions.