Question

An administrator built a custom object called Project__c with a lookup relationship to the standard Account object. The business now requires that every Project record must always be tied to an Account, that Project records should be deleted automatically when their Account is deleted, and that Projects should roll up a count to the parent Account. The administrator wants to convert the existing lookup field to a master-detail relationship. What must be true before this conversion can succeed?

Accepted Answer

Every existing Project__c record must already have a value populated in the Account lookup field.

Answer

The Account object must first be enabled as a custom object in Schema Builder.

Answer

A roll-up summary field must be created on Project__c before changing the relationship type.

Answer

The Project__c object must have its organization-wide default set to Public Read/Write.