Taʾdiyat al-maʿna is communicating the intended meaning so that it is conveyed fittingly. Error here is not limited to mistranslating a word. A style that disregards the hearer's position may fail at the rhetorical task of communication.
If a hearer forcefully denies a statement, merely giving the bare report when the occasion calls for reinforcement may be inadequate. Conversely, repeated solemn reinforcement before a receptive listener may also be misplaced.
Thus a true message in fasih language still requires appropriate emphasis, omission, explicit mention and arrangement to achieve its purpose.