You do not need to arrive with a complete technical specification. You do need enough context to explain the work, the people involved, and what should change. A good first brief makes those things visible before a team begins discussing screens or technology.
Describe a real situation
Choose one example of how work happens today. Explain what begins the process, who takes part, which systems are involved, and where the process slows down. A real situation exposes assumptions that a general feature list often misses.
Separate the outcome from the idea
An outcome describes what people need to accomplish. A proposed feature describes one possible way to help them. Record both, but keep them separate so discovery can test whether the proposed feature is the most useful approach.
Make the constraints visible
Existing applications, data access, security requirements, delivery dates, budgets, and internal capacity all influence a solution. Bring the constraints you know and flag the ones that still need investigation. Unknowns are useful planning information.
Identify a useful first scope
A first release should serve a coherent set of users and tasks. Discuss what must work together, what can wait, and how the result will be reviewed. This gives a delivery conversation a boundary without pretending every detail is settled.
Include the work after launch
Ask who will own access, maintenance, documentation, and support. Those decisions influence design and delivery. A software brief is stronger when it describes how the application will become part of normal work.
Bring this to the conversation.
Use this checklist to gather useful context.