Transaction Journals are the foundational records within Salesforce Loyalty Management that log every member activity affecting their loyalty balance. Each time a member earns points (accrual), spends points (redemption), or has their balance adjusted, a Transaction Journal record is created. By analyzing the volume, frequency, and type of these transactions, a company can directly and granularly measure how members are engaging with the loyalty program. These journals serve as the primary source of truth for all member interactions and are essential for tracking engagement patterns over time.

A. Analytics Studio: Analytics Studio (CRM Analytics) is a tool used to visualize and analyze data. While it can be used to create dashboards to measure engagement, it relies on the underlying data from Transaction Journals to do so.

B. Qualifying Currency: Qualifying Currency is a metric that contributes to a member's tier status. It is an outcome of engagement (e.g., points earned from purchases), not the method or record used to measure the engagement itself.

D. Benefits types: Benefit types define the perks or rewards offered to members, such as discounts or free shipping. They are designed to drive engagement, not to measure it.

1. Salesforce Help Documentation, "Transaction Journals": "A transaction journal is a record of a member’s credit or debit transaction. Transaction journals are created when a member accrues or redeems points, or when points are adjusted or expired." This establishes Transaction Journals as the primary record of member activity.

2. Salesforce Help Documentation, "View a Member's Loyalty Activity": "Use transaction journals to track a member's activities in a loyalty program. You can view a member's transaction history in the Transaction Journals related list on the Loyalty Program Member record page." This directly states that Transaction Journals are used to track member activities.

3. Salesforce Help Documentation, "Reports and Dashboards for Loyalty Management": "You can create reports on transaction journals to analyze the transactions that occurred in a specific period." This confirms that Transaction Journals are the source object for analyzing and measuring engagement through reporting.

4. Salesforce Developer Documentation, "Loyalty Management Data Model": The entity relationship diagram for Loyalty Management shows the TransactionJournal object as the central object linking a LoyaltyProgramMember to their specific point-related activities, highlighting its role in recording engagement.