An administrator at a real estate agency wants to create a field on the custom Property object to automatically count the total number of related inspection records. However, the Property object and Inspection object are linked using a lookup relationship. Which statement explains why the administrator cannot create a Roll-Up Summary field to meet this requirement?
- Roll-up summary fields can only be created on the parent object of a master-detail relationship, not a lookup relationship.Answer
- BDeleting parent records in a lookup relationship automatically cascades deletion to child records and invalidates summary calculations.
- CRoll-up summary fields cannot function until all picklist values for the child object are explicitly assigned to a record type.
- DCustom fields on lookup relationships must first be mapped through Lead conversion settings before summary calculations are permitted.
Answer
Roll-up summary fields can only be created on the parent object of a master-detail relationship, not a lookup relationship.
Roll-up summary fields are a native feature restricted exclusively to the master side of a master-detail relationship. Because the Property and Inspection objects are connected via a lookup relationship, declarative roll-up summary functionality is unavailable.
Step-by-Step Solution
Key Concept
Roll-Up Summary Field Capabilities and Limitations