In Workday, asubprocessis a step type used within a business process definition toinitiate another, independent business process. The purpose of a subprocess is to trigger a set of predefined steps from a separate process that runs as part of the main (parent) process. This provides modularity and reusability across multiple BPs.

For example, when configuring aHireprocess, you might add aRequest Compensation Change subprocessto automatically launch once the hire is initiated. This avoids duplicating configuration work and ensures consistency in how related actions are handled across events.

Option A is incorrect because approvals are managed throughApproval Steps, not subprocesses.

Option C is incorrect — background processes are system-managed and not user-configured through subprocesses.

Option D refers toTo-Do or Notification Steps, which are informational, not subprocess-driven.

Thus, subprocesses are a way toembed or chain additional processesinto an event flow, promoting flexibility and maintainability.

Reference (Paraphrased Source):

Workday Pro HCM Core – Business Process Configuration Guide (2023R2), Section: “Subprocess Step Type and Configuration Best Practices.”