For a Salesforce Loyalty Management promotion to function correctly, two key components must be in place: the promotion record itself must be configured properly, and an automation process must be active to apply it.

1. The promotion record must be active, have valid start/end dates that cover the transaction period, and be correctly associated with a Voucher Definition. If the link to the Voucher Definition is missing, the system doesn't know which voucher to issue, which aligns with the reported issue.

2. Promotions are not self-executing. They require an automation tool, typically a Salesforce Flow, to evaluate transactions and apply the promotion's rules. If this Flow is not created, is inactive, or contains errors, the promotion will never be triggered, even for qualifying transactions.

B. That the promotion has specified the Current Liability Amount.

This field is on the Loyalty Program Partner record for financial tracking and does not control the operational logic of issuing a promotion's voucher to a member.

D. That the member is a campaign member of the promotion campaign.

While promotions can be targeted using campaigns, it is not a requirement. The scenario describes a transaction-based trigger for all program members, not one limited to a specific campaign list.

1. Salesforce Help, Loyalty Management, Create a Promotion: This document outlines the essential steps for setting up a promotion. It states, "Make sure that the promotion is active and the promotion’s start and end dates are correct." It also details how to associate rewards, such as a Voucher Definition, with the promotion. The absence of this association is a primary reason for failure. (Reference: Salesforce Help, Article ID 000354583, "Create a Promotion").

2. Salesforce Help, Loyalty Management, Set Up a Flow to Apply a Promotion: This guide explicitly details the necessity of automation. It states, "To apply a promotion to a transaction, you can create a flow... After you create the flow, you must activate it." This confirms that an active Flow is a critical component for the promotion to be applied. (Reference: Salesforce Help, Article ID 000354611, "Set Up a Flow to Apply a Promotion").

3. Salesforce Help, Loyalty Management, Target Promotions with Campaigns: This resource explains that associating a promotion with a campaign is an option for targeting specific members. It is not a mandatory prerequisite for all promotions to function, especially those triggered by a specific action like a purchase. (Reference: Salesforce Help, Article ID 000354585, "Target Promotions with Campaigns").