The BBC committed a "major breach" of industry standards by not revealing that the presenter of a film about the Gaza situation was the child of a Hamas official, as ruled by regulatory body Ofcom.
An inquiry by the media regulator into the programme Gaza: How to Survive a Warzone has determined that the programme was "substantially inaccurate".
The BBC's director general had earlier expressed regret, saying there had been "a significant failing in relation to accuracy".
The regulator has ordered the BBC to broadcast a evening statement about its decisions.
"Since this amounts to a significant violation of our code, we are directing the broadcaster to air a statement of our determinations against it on BBC2 at 21:00, with a timing to be finalised," the regulator stated.
'Risk to Damage Credibility'
The regulator's report declared: "Our probe determined that the film's lack of disclosure that the voice's parent held a position in the Hamas-administered government was significantly deceptive.
"Consequently that the viewers did not have essential details which may have been very significant to their evaluation of the narrator and the content he presented.
"Confidence is at the center of the relationship between a media organization and its public, particularly for a state-funded media outlet such as the public broadcaster.
"This error had the possibility to undermine the significantly high degrees of confidence that audiences would have put in a factual film from the broadcaster about the Israel-Gaza war."
The film was pulled from iPlayer in last February after the presenter's family links emerged, and in the month of July an broadcaster's internal assessment concluded it infringed the corporation's content policies on accuracy.
A BBC spokesperson commented: "The authority's determination is in agreement with the findings of Peter Johnston's review, that there was a serious error in the film in relation to the corporation's content standards on factual correctness, which corresponds to clause 2.2 of Ofcom's Broadcasting Code.
"We issued an apology for this and we comply with Ofcom's decision in complete. We will follow the sanction as soon as the schedule and wording are finalised."
