Synechron

2 minute read

The Challenge

A UK run-off insurer relied on a large PowerBuilder estate built over more than two decades, with little formal documentation. As experienced developers left the business, critical knowledge about system functionality, dependencies and business processes was at risk of being lost. Creating documentation manually would have required significant developer effort, making a full estate-wide documentation programme difficult to justify and maintain.

The Solution

Synechron developed an AI-powered documentation pipeline using the OpenAI API to analyze PowerBuilder modules and generate two structured artefacts for every component. Technical specifications provided developers with insights into dependencies, data flows and implementation details, while business summaries translated complex code into plain English for analysts, operations teams and compliance stakeholders. All outputs were generated in structured Markdown and routed through a lightweight human review process.

The Results

80% of artefacts accepted with only minor edits

Generated documentation in seconds per module

Turned undocumented code into searchable knowledge

Our Process

Our agile process prioritized specific journeys to release to market according to customer and business needs.

Discover

Reviewed the PowerBuilder estate, identifying documentation gaps, knowledge risks and priority modules.

Design

Created separate AI prompts and output frameworks for technical and business audiences.

Deliver

Generated structured documentation artefacts for each module using the OpenAI API.

Develop

Refined prompts, validation workflows and knowledge base integration to support wider rollout.

About AI 

30+

Anthropic-Certified Architects

50+

Gen AI projects

200+

AI and ML practitioners 

Connect With Us

October 2026

Our Capabilities

Appian

Design, automate and optimize complex business workflows using process orchestration, AI and RPA (Robotic Process Automation) to build enterprise applications faster.