Universal Containers operates in a highly regulated industry.

For this scenario, Salesforce Field Service should use one Work Order Line Item per Asset and one Service Appointment per Work Order. This combination preserves an individual record for every installed Asset while consolidating the quarterly inspection into one field visit. Asset-specific line items provide compliance detail; the single parent appointment represents the one required onsite attendance.

Maintenance Plans are the native Field Service framework for recurring preventive service. They combine Assets, Work Types, recurrence, generation timeframes, and Work Order or Service Appointment generation so that future work can be created in a controlled and repeatable way.

The alternatives address different parts of the Field Service model. One Work Order per Asset or one Service Appointment per line item would fragment the inspection into multiple jobs or visits and conflict with the requirement for a single visit.

This approach keeps the implementation aligned with the standard Field Service data model and avoids unnecessary customization. Study Guide reference: Configuring Maintenance Plans — Maintenance Plans; Work Order generation; Service Appointment generation.