The public service broadcaster committed a "significant breach" of industry standards by not revealing that the narrator of a documentary about the Gaza situation was the son of a Hamas official, as determined by UK media regulator Ofcom.
An investigation by the media regulator into the programme Gaza: How to Survive a Warzone has concluded that the film was "significantly deceptive".
The chief executive of the broadcaster had already issued an apology, saying there had been "a serious error in relation to accuracy".
The authority has ordered the BBC to broadcast a peak-time declaration about its findings.
"Since this amounts to a significant violation of our regulations, we are instructing the BBC to air a statement of our findings against it on BBC Two at 21:00, with a date to be confirmed," the regulator stated.
'Possibility to Undermine Trust'
The watchdog's report declared: "Our probe determined that the film's lack of disclosure that the narrator's parent served in a role in the Hamas-controlled administration was significantly deceptive.
"It meant that the viewers did not have critical information which may have been very significant to their judgment of the narrator and the content he shared.
"Trust is at the heart of the bond between a television network and its public, particularly for a public service broadcaster such as the public broadcaster.
"This error had the risk to damage the very considerable levels of confidence that audiences would have put in a BBC factual programme about the Gaza conflict."
The programme was pulled from iPlayer in the month of February after the narrator's family links emerged, and in this past July an broadcaster's internal assessment determined it infringed the broadcaster's content policies on truthfulness.
A representative for the broadcaster commented: "The authority's determination is in agreement with the results of the internal assessment, that there was a serious error in the documentary in relation to the BBC's Editorial Guidelines on accuracy, which aligns with clause 2.2 of Ofcom's Broadcasting Code.
"We have apologised for this and we accept the regulator's ruling in complete. We will adhere to the sanction as soon as the timing and language are confirmed."
