When can a known error record be raised? 1. At any time it would be useful to do so 2. After a workaround has been found

Statement 1 is also valid because a known error record can be raised before a workaround is found, making '2 only' an incomplete answer.

Statement 2 is also valid because raising a known error after finding a workaround is standard practice, making '1 only' an incomplete answer.

Both statements are valid per ITIL Problem Management guidance, so 'neither' is factually incorrect.

ITIL defines a known error as a problem with a documented root cause and, optionally, a workaround. The Problem Management process explicitly permits raising a known error record at any time it is useful - including before a workaround is identified - so the error is tracked and visible to support staff. Both statements are therefore valid, making D correct.