Explain the Task and Actual Result
Start with what you were doing when the issue appeared. For example, a report for a particular period showed an unexpected figure. A specific task and result are more useful than a general statement that the application does not work.
We ask about the relevant steps and expected outcome. Screen details or messages can help where available. Any further checks are coordinated with the team, so users do not have to repeat unfamiliar actions simply to complete a report.