Salesforce Platform Developer Practice Exam 2026 – All-in-One Guide to Ace Your Certification!

In Salesforce, roll-up summary fields are used to perform calculations on child records and display the result on the parent record. However, one key limitation of roll-up summary fields is that they can only summarize data from fields directly on the child records and cannot reference fields from related parent records or cross-object formula fields.

Because roll-up summary fields are designed to operate solely on fields that exist within their own context (i.e., child records), referencing a field that is part of a cross-object formula does not align with this design. Cross-object formula fields pull data from related records based on a defined relationship but cannot feed directly into roll-up summaries.

Thus, the assertion that cross-object formula fields can be referenced in a roll-up summary is false. Understanding this limitation is essential for successful configuration and implementation of roll-up summary fields in Salesforce.