What phase of a batch job using a Batch scope must contain at least one message processor?

• A. On Init
• B. On Complete
• C. Process Records
• D. On Batch Start

Answer: (C)

In a batch job, the per-record work happens in the processing phase that runs for every batch item. This phase must contain at least one message processor because its purpose is to actually operate on each record—transformation, routing, or persistence—so something must execute for the data. The other phases—initialization, per-batch start, per-batch end, and overall completion—are about lifecycle and orchestration rather than performing the per-record processing, so they don’t inherently require a processor. Thus, the phase that handles the per-record work must include at least one message processor.