In a lookup relationship, the lookup fields are automatically required.
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More Salesforce-Development MCQ Questions
Suppose you need to edit a custom object having a master detail relationship with another custom or standard object. Which of the following types of access permissions might be required for the master record? 1.Edit permission to the master record 2.Read permission to related master record 3.Read/write permission to the master record 4.Delete permission to the master record