A trigger in an SAP Field Service Management business rule defines the specific circumstances under which the rule's actions will be executed. This mechanism is composed of three core logical components:

1. Event (E): The specific system occurrence that initiates the rule's evaluation (e.g., Activity Created, Service Call Updated).

2. Conditions (D): A set of logical criteria that are evaluated after the event occurs. The rule only proceeds if all conditions are met.

3. Variables (B): Placeholders used to capture and store data from the event's context (e.g., the status of a service call). These variables are then used within the conditions to perform the evaluation.

Together, these three components form the complete "when/if" logic of the trigger.

A. Execution count: This is metadata related to the rule's execution history or a potential setting to limit its runs, not a logical component of the trigger itself.

C. Action: The action is the "then" part of the rule, defining what the rule does after the trigger's conditions are successfully met.

1. SAP Help Portal

SAP Field Service Management

"Business Rules": The official documentation outlines the structure for creating a business rule. It details the distinct sections for configuring the Trigger (which includes the Event and Conditions) and Variables. While the UI separates them

variables are functionally integral to defining the conditions. The documentation states

"A business rule consists of the following parts: Trigger

Variables

Actions." The trigger's conditions rely on the defined variables. (Accessed under SAP Field Service Management -> Administration -> Business Rules -> Creating a Business Rule).

2. SAP Help Portal

SAP Field Service Management

"Creating a Business Rule": This guide illustrates the configuration steps. It shows that after selecting the Event on the Trigger tab

you define Variables on a separate tab

which are then used to build the Conditions on the Trigger tab. This demonstrates the tight coupling and necessity of all three components (Event

Variables

Conditions) for the trigger mechanism to function. (Accessed under SAP Field Service Management -> Administration -> Business Rules -> Creating a Business Rule).