How long should the analysis of business processes and its description take on a complex project lasting 1.5-2 years?

The time for analyzing and describing business processes for a complex project lasting 1.5-2 years depends on many factors: the volume and complexity of processes, the number of stakeholders, and the availability of information.

On average, such a project may require from a few weeks to several months (usually 1-3 months) for initial analysis and documentation. This includes:

• Gathering requirements and interviewing key users
• Modeling processes (e.g., using BPMN)
• Validating and agreeing on models with the business
• Preparing descriptive documentation

It is important to note that analysis is an iterative process, and documentation will be refined as the project develops. The analyst's task is to ensure sufficient detail for development and testing without delaying deadlines.