The public service broadcaster was found to have committed a "significant breach" of media regulations by not revealing that the voice of a film about the Gaza situation was the offspring of a Hamas administrator, as determined by UK media regulator Ofcom.
An probe by Ofcom into Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The head of the BBC had previously apologised, stating there had been "a significant failing in relation to truthfulness".
The regulator has directed the BBC to broadcast a evening announcement about its findings.
"Given this constitutes a serious breach of our code, we are directing the corporation to air a announcement of our determinations against it on BBC2 at 21:00, with a schedule to be finalised," the statement read.
'Possibility to Erode Confidence'
The regulator's announcement stated: "Our investigation determined that the film's omission to reveal that the voice's father held a role in the Hamas-run government was significantly deceptive.
"This implied that the viewers did not have vital facts which may have been highly relevant to their evaluation of the presenter and the content he presented.
"Trust is at the heart of the relationship between a broadcaster and its viewers, notably for a national broadcasting corporation such as the BBC.
"This error had the possibility to damage the exceptionally strong amounts of trust that audiences would have put in a BBC factual programme about the Gaza conflict."
The film was removed from iPlayer in last February after the presenter's personal associations emerged, and in the month of July an broadcaster's internal assessment concluded it infringed the corporation's journalistic standards on factual correctness.
A BBC spokesperson commented: "The authority's determination is in line with the findings of the internal assessment, that there was a significant failing in the programme in relation to the broadcaster's journalistic policies on accuracy, which corresponds to Rule 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we agree with the authority's determination in complete. We will follow the directive as soon as the timing and language are finalised."
