Even I agree to the "no harm, no foul" aspect. In the case of the data recorded with an erroneous part number cited earlier, "scratching out" is close, but the ideal is a single line through the error, allowing readability, but signifying deletion, together with the correct part number, plus a notation of why the change is made is preferable to redoing or total scratch out.
As a manager of folks who may make such an error, I'd like to know the errors occur and look for a root cause so our organization can do either CA or PA (including "mistake proofing") to prevent recurrence.
I have no problem with correction of an error, so long as there is an audit trail of the error, who corrected it, when, and why. Without such data, how do I know whether the change was legitimate?
In lab and invention scenarios, patents have been lost on such minutiae as white out, erasure, unnotated changes.