Involving a trained customer CPQ admin in the project from the beginning provides significant benefits. Their participation ensures they gain a deep understanding of the system's configuration and the rationale behind design decisions. This knowledge makes them better equipped to maintain, troubleshoot, and scale the solution post-go-live, fostering self-sufficiency (E). Furthermore, an admin who understands the build can create more relevant test scenarios and validate functionality more effectively during User Acceptance Testing (UAT), leading to a more efficient and thorough test phase (A).

B. Active participation complements but never eliminates the need for comprehensive documentation for future reference and knowledge transfer.
C. While a successful project has value, admin participation is about project quality and long-term ownership, not directly increasing engagement fees.
D. While new requirements may be identified, this is a project risk (scope creep) to be managed, not a primary benefit. ---

1. Trailhead, Revenue Cloud Consultant Accredited Professional Prep, "Discovery and Project Planning" module, Unit: "Identify Project Roles and Responsibilities." (This unit stresses the importance of the customer's System Administrator being involved throughout the project to ensure a smooth transition and long-term success).

2. Salesforce Partner Community, "Best Practices for a Successful CPQ Implementation," 2022, Section: "Customer Enablement," p. 15. (This document advocates for training and involving the customer's admin early to ensure they can support the solution and drive user adoption post-launch).