The public service broadcaster engaged in a "significant breach" of broadcasting rules by omitting to mention that the voice of a programme about Gaza was the son of a Hamas representative, according to UK media regulator Ofcom.
An investigation by the broadcasting watchdog into the programme Gaza: How to Survive a Warzone has found that the documentary was "significantly deceptive".
The head of the BBC had already issued an apology, noting there had been "a major oversight in relation to accuracy".
The regulator has directed the corporation to air a evening statement about its conclusions.
"Since this amounts to a major infringement of our regulations, we are instructing the BBC to broadcast a message of our findings against it on BBC2 at 21:00, with a schedule to be finalised," the statement read.
'Possibility to Erode Trust'
The regulator's statement stated: "The inquiry we conducted concluded that the documentary's lack of disclosure that the voice's father occupied a position in the Hamas-run government was substantially inaccurate.
"This implied that the audience did not have critical information which may have been highly relevant to their evaluation of the presenter and the information he provided.
"Trust is at the core of the connection between a broadcaster and its public, particularly for a state-funded media outlet such as the British Broadcasting Corporation.
"This failing had the potential to erode the significantly high amounts of trust that the public would have placed in a BBC factual programme about the Gaza conflict."
The documentary was pulled from the online platform in last February after the presenter's familial connections were revealed, and in the month of July an broadcaster's internal assessment found it violated the corporation's journalistic standards on accuracy.
A representative for the broadcaster stated: "The Ofcom ruling is in agreement with the findings of the internal assessment, that there was a significant failing in the programme in relation to the corporation's content standards on truthfulness, which aligns with clause 2.2 of Ofcom's Broadcasting Code.
"We expressed regret for this and we accept Ofcom's decision in its entirety. We will follow the directive as soon as the timing and language are finalised."
