What is the maximum number of objects that can be added to a custom report type in Salesforce?

The maximum number of objects that can be included in a custom report type in Salesforce is four, provided that these objects are related through lookup or master-detail relationships. This capability allows users to pull data from multiple related objects into a single report, which can be incredibly useful for complex reporting needs.

In practice, creating a report type with four related objects permits comprehensive analysis across various entities. This could involve, for example, combining data from accounts, contacts, opportunities, and cases to give a holistic view of customer interactions and sales processes.

Understanding the limitations relating to associations is critical; each object must be appropriately linked to ensure data integrity and relevance in reporting. Hence, having this structure of four related objects adheres to Salesforce's design to enhance reporting functionalities while maintaining performance and usability.