The BBC committed a "serious breach" of media regulations by not revealing that the narrator of a programme about the Gaza situation was the offspring of a Hamas representative, as determined by UK media regulator Ofcom.
An inquiry by the media regulator into the documentary titled Gaza: How to Survive a Warzone has determined that the film was "materially misleading".
The chief executive of the broadcaster had previously apologised, saying there had been "a serious error in relation to factual correctness".
The authority has ordered the corporation to transmit a peak-time announcement about its conclusions.
"Given this constitutes a serious breach of our regulations, we are directing the BBC to air a message of our conclusions against it on BBC Two at 21:00, with a timing to be confirmed," it said.
'Risk to Damage Credibility'
The watchdog's statement stated: "Our investigation determined that the programme's failure to disclose that the voice's father served in a post in the Hamas-run administration was substantially inaccurate.
"Consequently that the public did not have vital facts which may have been extremely pertinent to their evaluation of the presenter and the information he presented.
"Confidence is at the center of the connection between a media organization and its viewers, especially for a national broadcasting corporation such as the public broadcaster.
"This oversight had the risk to undermine the exceptionally strong degrees of credibility that viewers would have invested in a factual film from the broadcaster about the conflict in Gaza."
The programme was pulled from the BBC's streaming service in the month of February after the presenter's personal associations came to light, and in the month of July an broadcaster's internal assessment found it breached the organization's editorial guidelines on factual correctness.
A corporation official commented: "The regulator's decision is in line 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 accuracy, which corresponds to regulation 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we agree with the regulator's ruling in its entirety. We will follow the directive as soon as the date and wording are confirmed."
