1. Salesforce Help Documentation, Consumer Goods Cloud: "Action Plans in Consumer Goods Cloud". This document explicitly states, "Action Plans help your field reps organize their daily tasks for a visit." This establishes the primary context and connection between the two objects.
2. Salesforce Help Documentation, Consumer Goods Cloud: "Assign Action Plan Templates to Visits". This guide details the process of associating templates with visits, which results in an Action Plan record being created with the Visit as its target. It states, "You can associate action plan templates with visits by using visit-level information..."
3. Salesforce Object Reference Guide: The documentation for the ActionPlan object describes the TargetId field. It is a polymorphic lookup field that points to the record for which the plan is created. In the Consumer Goods Cloud context, this field references the Visit object's record ID.