The public service broadcaster committed a "major breach" of industry standards by failing to disclose that the presenter of a film about the Gaza conflict was the child of a Hamas official, according to UK media regulator Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has found that the documentary was "materially misleading".
The head of the BBC had previously apologised, noting there had been "a major oversight in relation to truthfulness".
The regulator has instructed the corporation to air a peak-time statement about its conclusions.
"As this represents a serious breach of our rules, we are directing the broadcaster to air a message of our conclusions against it on BBC2 at 9pm, with a schedule to be confirmed," the regulator stated.
'Risk to Undermine Trust'
The watchdog's announcement stated: "The inquiry we conducted found that the programme's lack of disclosure that the voice's male guardian held a post in the Hamas-run administration was materially misleading.
"It meant that the public did not have critical information which may have been very significant to their judgment of the presenter and the content he presented.
"Credibility is at the core of the connection between a television network and its audience, especially for a state-funded media outlet such as the BBC.
"This error had the risk to undermine the significantly high levels of credibility that the public would have invested in a factual film from the broadcaster about the Gaza conflict."
The documentary was pulled from the online platform in last February after the presenter's family links emerged, and in the month of July an corporation's own inquiry found it infringed the corporation's journalistic standards on truthfulness.
A BBC spokesperson said: "The regulator's decision is in agreement with the conclusions of the internal assessment, that there was a significant failing in the film in relation to the broadcaster's journalistic policies on factual correctness, which reflects regulation 2.2 of the regulator's media standards.
"We issued an apology for this and we accept the regulator's ruling in complete. We will adhere to the penalty as soon as the schedule and wording are confirmed."
