In Chap.3:20 of his Method of Vedanta Sri SSS expresses it thusly:
The Method of False Attribution followed by Retraction underlies other forms of Vedanta Teaching (Adhyaropa/Apavada). It is found throughout the Upanishads, Gita and Brahma Sutras.
What Sri Harsha fails to understand is that the search for truth through dialogue which brings clarification is not served by the stultification of your interlocutors. Even honest error has a perspective which can be corrected. It may even bring focus to an issue by displaying a characteristic misstep. Inquiry has many landing points which are partial and false. They are surpassed by a new vision. This is the process known as sublation.
In fact we are all wrong and ‘nobody knows anything’.
There is one false attribution that is the root cause of all others. It is due to its presence that the other erroneous ideas come into being and work mischief during the time of their existence. So the Upanishads single out this error and call it metaphysical ignorance (avidya). And the knowledge whereby one establishes the true nature of metaphysical reality through negating that error is called enlightenment (vidya).(Chap.3:22)
Note: adhiropa is the transliteration that I first came across. adhyaropa is now more usual so I will use that in future and it ties in with adhyasa - superimposition