Don’t waste too long investigating a problem if you think that the problem may have happened before. But you need to have at least some idea where the problem occurred.

If someone else has mentioned the problem to you, and you know exactly what the problem is, then you might consider who you’re talking to before you reveal all the details.

Reference:

• Step 12 – Has it happened before?

Related questions:

• Did it work last time?
• Has it been tested?
• Has it happened before?
• Have you already fixed the problem?
• Have you raised an issue?
• Is there a defect?
• When did the problem occur?