I work with a customer who is notorious for not defining requirements. Their culture is that everyone is either too busy or not knowledgeable enough of all the working parts of a system to define requirements. It's a culture problem over there.
The tool I work on generates reports. Rather than defining requirements for reports, the only way to make progress is to understand their general needs through conversation, then provide them a draft report - your best guess. They tell you what to change or what they don't want, then you make changes and provide another draft. When enough tracer bullets are shot, you arrive at the report they actually need.
The tool I work on generates reports. Rather than defining requirements for reports, the only way to make progress is to understand their general needs through conversation, then provide them a draft report - your best guess. They tell you what to change or what they don't want, then you make changes and provide another draft. When enough tracer bullets are shot, you arrive at the report they actually need.