According to best practices, when a Business Analyst encounters low-quality process documentation, the recommended approach is to start by documenting the process at a high level and then delve into the details.
This method allows the Business Analyst to establish a clear overview of the process, which can then be refined and expanded upon to ensure all aspects are thoroughly documented. It is essential to capture the core elements of the process first, which provides a framework for identifying and filling in the gaps with more detailed information1.
References: This approach is supported by discussions in the UiPath Community Forum, where it is advised to begin with high-level documentation and progressively add detail to ensure comprehensive coverage of the process1.