The divisional (or decentralized) model establishes separate, self-contained automation capabilities within individual business units or divisions. A primary challenge of this structure is the creation of operational silos. These silos prevent the effective sharing of reusable automation components, best practices, and lessons learned across the enterprise. This lack of a centralized asset library and standardized approach leads to duplicated effort, inconsistent quality, and ultimately, a slower and less efficient scaling of the automation program. Each division essentially "reinvents the wheel," missing out on the economies of scale and accelerated delivery that a shared, centralized repository provides.

B. Process ownership is typically clearer and less abstract in a divisional model, as the automation team is closer to the business unit that owns the process.

C. A divisional model is often more agile and responsive to local change requests, whereas slow change management is a common criticism of a highly centralized model.

D. Security and access control are fundamental challenges that must be addressed in any operating model, not a difficulty specifically associated with the divisional structure.

1. Blue Prism Portal Documentation, Robotic Operating Model (ROM): Delivery. The official documentation describes the decentralized (divisional) model and lists its primary disadvantages as "Inconsistent standards," "Duplication of effort," and "Limited opportunity for re-use." This directly supports the idea that the model does not benefit from shared assets and best practices. (Note: Access to the Blue Prism Portal is required).

2. Blue Prism, "Robotic Operating Model (ROM) - Architecting a Digital Workforce at Scale," Version 2.0, Section: 4.2.2 Decentralized. This guide explicitly states that in a decentralized model, "each business unit has its own RPA delivery and operational capability... The major drawback of this approach is that there is little or no sharing of best practice or re-use of automation components." This directly validates that option A is the correct challenge.