According to Wikipedia, a problem to solve or a problem statement is a concise description of an issue to be addressed or a condition to be improved upon. It identifies the gap between the current (problem) state and desired (goal) state of a process or product.
How to write an effective Problem Statement - iSixSigma
What is the problem that needs to be solved?
Why is it a problem? (highlight the pain)
Where is the problem observed? (location, products)
Who is impacted? (customers, businesses, departments)
When was the problem first observed?
How is the problem observed? (symptoms)